Peshtera Kozarnika - Credit: Wikimedia Commons
Kozarnika or Peshtera Kozarnika () is a cave in northwestern Bulgaria that was used as a hunters’ shelter as early as the Lower Paleolithic (1.6-1.4 million BP). It marks an older route of early human migration from Africa to Europe via the Balkans, prior to the other currently suggested route - the one across Gibraltar. The cave probably keeps the earliest evidence of human symbolic behaviour and the earliest European Gravette flint assemblages came to light here. Read more on Wikipedia
Source: en.wikipedia.org