10 January 2021, Saxony-Anhalt, Schierke: Day tourists go for a walk on the Brocken. The mountain presents itself wintry with ice and snow and a good distant view. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialise. Photo: Matthias Bein/dpa-Zentralbild/ZB

10 January 2021, Saxony-Anhalt, Schierke: View of a snow-covered sign with the inscription "Harzer Schmalspur Bahnen" at Brocken station. The mountain presents itself wintry with ice and snow and a good distant view. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

10 January 2021, Saxony-Anhalt, Schierke: A hiker walks on the Brocken along the train station. The mountain presents itself wintry with ice and snow and a good distant view. Due to the Corona pandemic, the expected rush to the winter sports areas was largely absent. Photo: Matthias Bein/dpa-Zentralbild/ZB

10 January 2021, Hessen, Schmitten: The brown sign "Sandplacken" is in wintry surroundings. The Feldberg area in the Taunus is closed due to snow breakage and to avoid a rush of winter excursionists. The summit is only accessible without motorization. Photo: Andreas Arnold/dpa

10 January 2021, Berlin: The new government plane, an Airbus A350 christened "Kurt Schumacher", stands at Berlin airport. The aircraft took off for Egypt early this morning. Foreign Minister Maas was the first member of the Federal Government to fly on the new aircraft on a state visit. Photo: Michael Fischer/dpa

10 January 2021, Berlin: The new government plane, an Airbus A350 christened "Kurt Schumacher", stands at Berlin airport. The aircraft took off for Egypt early this morning. Foreign Minister Maas was the first member of the Federal Government to fly on the new aircraft on a state visit. Photo: Michael Fischer/dpa

10 January 2021, Berlin: The new government plane, an Airbus A350 christened "Kurt Schumacher", stands at Berlin airport. The aircraft took off for Egypt early this morning. Foreign Minister Maas was the first member of the Federal Government to take off on a state visit in the new aircraft. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Heiko Maas (SPD), Foreign Minister, sits in the new A350 government aircraft. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened "Kurt Schumacher", took off from Berlin early Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: Federal Foreign Minister Heiko Maas (M, SPD) stands in front of the new A350 government aircraft next to Lieutenant Colonel Achim Hauck (l), pilot of the aircraft, and Colonel Daniel Draken, commander of the Special Air Mission Wing. Maas was the first member of the German government to take off on a state visit in the new aircraft. The Airbus A350, christened the "Kurt Schumacher", took off from Berlin early on Sunday evening bound for Egypt. Photo: Michael Fischer/dpa

10 January 2021, Berlin: German Foreign Minister Heiko Maas (on right) walks away from the new German Airbus A350 government plane. Maas was the first member of the German government to use the aircraft on official business, flying to Cairo for talks Sunday evening. Photo: Michael Fischer/dpa

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag, the Friedrichstra?e station and the television tower are reflected in the evening by the surface of the water of the Spree. Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag, the Friedrichstra?e station and the television tower are reflected in the evening by the surface of the water of the Spree. Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag, the Friedrichstra?e station and the TV tower are reflected by the surface of the Spree in the evening (camera movement during long exposure). Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag, the Reichstag and the Paul L?be House (r) are reflected by the water surface of the Spree in the evening. Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag, the Reichstag and the Paul L?be House (r) are reflected by the water surface of the Spree in the evening. Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag, the Reichstag and the Paul L?be House (r) are reflected by the water surface of the Spree in the evening. Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: The lights of the street lighting on the banks of the Reichstag and the Reichstag are reflected in the evening by the water surface of the Spree. Photo: Soeren Stache/dpa-Zentralbild/ZB

10 January 2021, Berlin: Lights of the ARD capital office on the banks of the Reichstag are reflected by the water of the Spree. Photo: Soeren Stache/dpa-Zentralbild/ZB

09 January 2021, Saxony-Anhalt, Schierke: Winter sports enthusiasts head in the direction of the cross-country ski trail entrance. The cross-country trails in Schierke are groomed and offer the best cross-country skiing conditions. The Feldberg area in the Taunus is closed due to snow breakage and to avoid a rush of winter excursionists. The summit is only accessible without motorisation. Photo: Matthias Bein/dpa-Zentralbild/dpa

09 January 2021, Saxony-Anhalt, Wernigerode: A snowman with a colorful umbrella stands in the front yard of an apartment building. Winter has also arrived in the lowlands. Photo: Matthias Bein/dpa-Zentralbild/dpa

09 January 2021, Saxony-Anhalt, Wernigerode: A snowman with a colorful umbrella stands in the front yard of an apartment building. Winter has also arrived in the lowlands. Photo: Matthias Bein/dpa-Zentralbild/dpa

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09 January 2021, Saxony-Anhalt, Schierke: Winter sports tourists are on the trails in Schierke. The trails in Schierke are groomed and offer the best cross-country skiing conditions. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

09 January 2021, Saxony-Anhalt, Schierke: Winter sports tourists are on the trails in Schierke. The trails in Schierke are groomed and offer the best cross-country skiing conditions. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

09 January 2021, Saxony-Anhalt, Schierke: Winter sports tourists walk in Schierke in the direction of the cross-country ski trail entrance. The trails in Schierke are groomed and offer the best cross-country skiing conditions. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

09 January 2021, Saxony-Anhalt, Schierke: Winter sports tourists are on the trails in Schierke. The trails in Schierke are groomed and offer the best cross-country skiing conditions. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

09 January 2021, Saxony-Anhalt, Schierke: Winter sports tourists are on the trails in Schierke. The trails in Schierke are groomed and offer the best cross-country skiing conditions. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

09 January 2021, Saxony-Anhalt, Wernigerode: View of a shopping street in Wernigerode. Due to the Corona pandemic, the expected rush to the winter sports areas largely failed to materialize. Photo: Matthias Bein/dpa-Zentralbild/ZB

17 December 2020, Berlin: Photo: Christoph Soeder/dpa

14 September 2017, North Rhine-Westphalia, Hellenthal: Snow-covered trees are reflected in the water of the Oleftalsperre (aerial photo with drone). After some chaotic conditions in the winter sports areas in the Eifel and the Sauerland and Bergisch Land at the turn of the year, the authorities are expecting another rush this weekend. Photo: Marcel Kusch/dpa

14 September 2017, North Rhine-Westphalia, Hellenthal: The trees on the banks of the Oleft reservoir are covered in snow (aerial photo with drone). After some chaotic conditions in the winter sports areas in the Eifel and the Sauerland and Bergisch Land at the turn of the year, the authorities are expecting another rush this weekend. Photo: Marcel Kusch/dpa

14 September 2017, North Rhine-Westphalia, Hellenthal: Snow-covered trees are reflected in the water of the Oleftalsperre (aerial photo with drone). After some chaotic conditions in the winter sports areas in the Eifel and the Sauerland and Bergisch Land at the turn of the year, the authorities are expecting another rush this weekend. Photo: Marcel Kusch/dpa

14 September 2017, North Rhine-Westphalia, Hellenthal: The trees on the banks of the Oleft reservoir are covered in snow (aerial photo with drone). After some chaotic conditions in the winter sports areas in the Eifel and the Sauerland and Bergisch Land at the turn of the year, the authorities are expecting another rush this weekend. Photo: Marcel Kusch/dpa

01 January 1970, Thuringia, Arnsgereuth: The Thuringian Forest is covered in snow. In the winter sports regions of the Thuringian Forest, the feared chaos of excursionists has so far failed to materialize. (Recording with a drone) Photo: Bodo Schackow/dpa-Zentralbild/dpa

01 January 1970, Thuringia, Arnsgereuth: Winter sports enthusiasts toboggan down a slope. In the winter sports regions of the Thuringian Forest, the feared chaos of excursionists has so far failed to materialize. (Recording with a drone) Photo: Bodo Schackow/dpa-Zentralbild/dpa

01 January 1970, Thuringia, Arnsgereuth: Winter sports enthusiasts toboggan down a slope. In the winter sports regions of the Thuringian Forest, the feared chaos of excursionists has so far failed to materialize. (Recording with a drone) Photo: Bodo Schackow/dpa-Zentralbild/dpa