Stock Photo - 17 June 2019, Bavaria, Oberstdorf: Ducks swim on the crystal clear water of the Christlesees. The lake, which is fed by underground springs, has a constant temperature of four to six degrees and does not freeze over even in winter. Photo: Karl-Josef Hildenbrand/dpa. - Oberstdorf/Bavaria/Germany

Stock Photo: 17 June 2019, Bavaria, Oberstdorf: Ducks swim on the crystal clear water of the Christlesees. The lake, which is fed by underground springs.

Searchable keywords

Choose multiple keywords