Alleged interbreeding may have occurred in a remote Vacation Spa cave… in Vindija, Croatia … circa 44,000 BCE, http://www.nytimes.com/2010/05/07/science/07neanderthal.html “Signs of Neanderthals Mating With Humans” …evidence found at this remote Vacation Spa cave, …where bones were found in the cave... Sign in to see full entry.