The earliest Neanderthals lived in Europe around 200,000 years ago but went extinct around 30,000 years ago as modern humans with more advanced brains and tools migrated out of Africa around 100,000 years ago. Neanderthals were muscular with large bones and brains, migrated as far as Siberia, hunted large game like bison and reindeer, and made tools from stone and bone. They began disappearing as the forests they relied on shrank and modern humans' superior abilities outcompeted them.