[presidio9]

The theory is based on tools found on three inaccessible Greek islands:

But the seabed off Greece today drops down to around 300 metres, meaning that when Neanderthals were in the region, the sea would have been at least 180 metres deep.

That being said, there are many plausible alternatives. For example, the tools may have been discovered in antiquity and brought to the island by a later culture.

[org.whodat]

I looked up a depth chart and it would seem a land bridge happens between the coast of Libya and the toe of Italy. If not fully walkable a short paddle by raft. As the gentleman said.

[Rastus]

Wasn’t there a Far Side where a time traveler dropped a Coke bottle in ancient times and said, “Let’s see them figure THIS out!”?