Complex sentence: In the Upper Paleolithic, along with the northern coast of the Black Sea in general, Crimea, occupied by the Gravettian Culture, was an important Last Glacial Maximum refugia from where north-central Europe was re-populated after the end of the Ice Age.
Split into simpler sentences: In the Upper Paleolithic, along with the northern coast of the Black Sea in general, Crimea was occupied by the Gravettian Culture. It was an important Last Glacial Maximum refugia from where north-central Europe was re-populated after the end of the Ice Age.