General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM

General inside view of Ballica Cave in Tokat, Turkey, on May 31, 2017. Ballica Cave is a?fossil?cave. Its overall length is 68?m (223?ft). The upper sections are composed of Permian-Triassic?marble?and?lime. There are two layers above the entrance and five layers below, making a total of seven layers. Five layers were formed over three periods. One section stretches northeast and southwest, consisting of two layers. The second section, containing layers #3 and 34 were formed during the Second Evolutionary Period, and the 5th layer was formed in the 20th century. The gallery, which leads to some open space with a?pond, is the first section in the northeast-southwest direction. It consists of the?Stalactite?and?Stalagmite?Hall on the first level, and the?Fossil?Hall and the?Bat?Hall on the second level. The Magnificent Gallery on the third floor is formed by the three adjoining halls: the?Mushroom,?Column, and the New Hall.?The many colours in the cave are astonishing, and the filtered air is rich in?oxygen. It was discovered in 1980 and opened to visitors in 1995. Ballica cave, which has an average temperature of 18 degrees and a humidity of 54 percent, is also frequented by asthmatic patients. The cave is located at an altitude 1.085 m above sea level and approximately 3.4 million years old. Photo by Tolga Adanali/Depo Photos/ABACAPRESS.COM