During the subsequent Weichselian glaciation – only about 10,000 years ago – the ice sheet could not cover the hill due to its height, it could only flow around it, and it therefore formed a nunatak.
During the Weichselian glaciation, roughly 10,000 years ago, the ice sheet encroached on the hill but was unable to cover it due to its steepness, leading to the formation of a protruding peak – a nunatak.