Stock Photo - 29 September 2022, Bavaria, Selb: Ernst Kroemer (r) from the State Office for the Environment stands next to a pipe with a soil sample that is just coming out of the borehole. The State Office for the Environment is using the borehole to research earlier volcanic activity in the region. The area was still volcanically active until the Stone Age. Photo: Daniel Löb/dpa. - Selb/Bavaria/Germany

Stock Photo: 29 September 2022, Bavaria, Selb: Ernst Kroemer (r) from the State Office for the Environment stands next to a pipe with a soil sample that is just coming out.

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