lost worlds

i'm currently reading graham hancock's underworld, among other things. in this book he explores the theory that many ancient civilizations are currently lying at the bottom of the ocean due to the flood waters from the last ice age. if he's correct, this means that high civilizations existed 10,000 years earlier than currently thought. the critics to this line of thinking seem to have only one argument, "if there was such a high civilization there would be evidence", this argument has two problems. Problem one; you have to find the evidence and in underworld that evidence is underwater and we know less about the oceans than we do about the moon. Second problem; when you bring critics evidence they say it's a hoax or that the ruins you find under water are simply odd natural rock formations.

of course not all these old civilizations lived on the cost, there are ancient civilix=zations that lived in the deserts and the jungles. Anything left unattended in the jungle wont last long at all. take the maya and aztec ruins and pyramids. they weren't rediscovered until the early 1900's and it had only been 400 hundred years since the conquistadores. so why would the critics assume that a civilization lost for 12,000 years would be easy to find. troy wsa a myth until someone decided to follow those myths with critics calling him a fool the entire way, and what do you know he found it. the mythical city of troy was real so what else has been lost to the world through the veil of legends.