22 March 2019, Mexico, Calakmul: A peacock turkey (Meleagris ocellata) migrates through the Mexican rainforest. The rainforest and archaeological site of Calakmul in the state of Campeche have been recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: A tourist hikes through the Mayan ruins in the middle of the rainforest in the south of the Mexican peninsula Yucatan. The rainforest and archaeological site in the state of Campeche were recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: A peacock turkey (Meleagris ocellata) migrates through the Mexican rainforest. The rainforest and archaeological site of Calakmul in the state of Campeche have been recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: The so-called Structure II in the Mayan ruins in southeastern Mexico. The rainforest and archaeological site in the state of Campeche were recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: Part of a pyramid in the Mayan ruins in southeastern Mexico. In the background you can see the rainforest. The rainforest and archaeological site in the state of Campeche were recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: A pyramid in the Mayan ruins in southeastern Mexico. In the background you can see the rainforest. The rainforest and archaeological site in the state of Campeche were recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: View from the pyramid in the Mayan ruins in southeast Mexico to the rainforest. The rainforest and archaeological site in the state of Campeche were recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Xpujil: Gloria Fuentes sells handicrafts at the entrance to the Mayan ruins. She hopes that the Maya train will also get a stop in Xpujil to help the regional economy. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Xpujil: Gloria Fuentes sells handicrafts at the entrance to the Mayan ruins. She hopes that the Maya train will also get a stop in Xpujil to help the regional economy. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Xpujil: Tourist guide Damaso Vasquez sits on a stone in front of the entrance of the Mayan ruins. He's against building the Mayan train in southeast Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Xpujil: View to the so-called building I of the Maya ruins in the southeast of Mexico. The planned Maya train line also runs through the state of Campeche and is intended to attract more tourists to the area. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Calakmul: A peacock turkey (Meleagris ocellata) migrates through the Mexican rainforest. The rainforest and archaeological site of Calakmul in the state of Campeche have been recognized by Unesco as the only mixed cultural and natural heritage site in Mexico. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

22 March 2019, Mexico, Xpujil: View of the archaeological site in the southeast of Mexico. The planned Maya train line also runs through the state of Campeche and is intended to attract more tourists to the area. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

21 March 2019, Mexico, Xpujil: Alfredo Diaz Lopez, president of the Xpujils Indigenous Regional Council, sits in one of the organization's offices. The Council criticised the construction of the Maya train and demanded that the indigenous communities concerned be consulted about the project. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

21 March 2019, Mexico, Xpujil: Farmer Genomelin Lopez Velazquez sits in front of the Indigenous Regional Council building in the southeastern state of Campeche. The Council criticised the construction of the Maya train and demanded that the indigenous communities concerned be consulted about the project. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

21 March 2019, Mexico, Xpujil: Farmer Genomelin Lopez Velazquez sits in front of the Indigenous Regional Council building in the southeastern state of Campeche. The Council criticised the construction of the Maya train and demanded that the indigenous communities concerned be consulted about the project. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

21 March 2019, Mexico, Xpujil: Alfredo Diaz Lopez, president of the Xpujils Indigenous Regional Council, sits in one of the organization's offices. The Council criticised the construction of the Maya train and demanded that the indigenous communities concerned be consulted about the project. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

21 March 2019, Mexico, Xpujil: Agricultural producer Genomel?n Lopez Vel?zquez sits in front of the Xpujil Indigenous and Popular Regional Council building in the Mexican state of Campeche. The council criticizes the Tren Maya project and demands that indigenous communities be consulted. Photo: Andrea Sosa/dpa

20 March 2019, Mexico, Mexiko-Stadt: Rogelio Jimenez Pons, head of the Maya Train project and director of the National Fund for Tourism Promotion, explains the plans for the planned train route in his office. The train will run 1525 kilometres on the Yucatan peninsula and transport around three million tourists a year. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa

20 March 2019, Mexico, Mexiko-Stadt: Rogelio Jimenez Pons, head of the Maya Train project and director of the National Fund for Tourism Promotion, explains the plans for the planned train route in his office. The train will run 1525 kilometres on the Yucatan peninsula and transport around three million tourists a year. (to dpa "Maya train in Yucat?n: environmental sin or key to economic boom?") Photo: Andrea Sosa/dpa