Stock Photo - 12 December 2022, Brandenburg, Criewen: Steffi Lemke (Greens), Federal Minister for the Environment, and Michael Tautenhahn, Deputy Head of Lower Oder Valley National Park, are in the Lower Oder Valley National Park on the German-Polish border river Oder measuring the electrical conductivity of the water. In August 2022, the fish kill in the Oder had destroyed large parts of the river's nature on both the German and Polish sides. The Lower Oder Valley National Park was hit particularly hard by the disaster. The Federal Environment Minister Steffi Lemke (Greens) visited the national park to find out about the current state of the Oder. Photo: Patrick Pleul/dpa. - Criewen/Brandenburg/Germany