Well, I don't know too much about Crimea, but I find it unlikely that it would build up that fast. Still, let's see.
*Takes a look at Crimea and instantly notices the mountain range.*
Haha, nope. Well let's see what some geologic history can be found on google.
A disturbing lack (in my five-ish minutes of searching), but there was some archaeology that shows human occupation the mountains around 32,000 years ago, so I'm going to have to go with saying that site is as suspicious in its conclusions as you were afraid.