Complex sentence: The Weichsel glaciation covered all of Denmark, except the western coasts of Jutland, it ended around 13,000 years ago allowing humans to move back into the previously ice-covered territories and establish permanent habitation.
Split into simpler sentences: The Weichsel glaciation covered all of Denmark, except the western coasts of Jutland. It ended around 13,000 years ago allowing humans to move back into the previously ice-covered territories and establish permanent habitation.