Ahrensburg tunnel valley
The Ahrensburg Tunneltal is a glacial channel north of Hamburg near Ahrensburg . It runs along the Lübeck – Hamburg railway in the direction of Stellmoor and forms the Stellmoor – Ahrensburger Tunneltal nature reserve .
The tunnel valley was formed by meltwater under the inland ice , which covered this area in the last ice age. These meltwater eroded deep into the subsoil and, at the end of the Ice Age, left behind a narrow, elongated channel with steep slopes, in whose protected location remains of ice, so-called dead ice , could be preserved. About 13,000-10,000 years ago the residual ice was covered by a layer of gravel and sand and above it was a lake, on the banks of which there were resting places for the late Ice Age reindeer hunter cultures ( Hamburg and Ahrensburg culture ), which created this natural bottleneck that the reindeer herds had to go through their annual hikes, used them for hunting. In the wet sediments of today's silted up lake , organic legacies of these hunter cultures, such as wooden arrows from the Ahrensburg culture , were first discovered by Alfred Rust . The lime content of some of these sediments also protected numerous bones of prey from decomposition by soil acids.
literature
- Archaeological State Museum of the Christian-Albrechts-University Schloss Gottorf (Ed.): Stone Age Hunters in Schleswig-Holstein . Association for the Promotion of the State Archaeological Museum, Schleswig 1998, p. 22.
Coordinates: 53 ° 39 ′ 36 ″ N , 10 ° 13 ′ 8 ″ E