[RightWhale]

They need to dredge up some wood pieces from the drowned villages at various depths and using dendrochronology nail down the date. That ought to do it.

[blam]

"They need to dredge up some wood pieces from the drowned villages at various depths and using dendrochronology nail down the date. That ought to do it."

Yup. I expect that's on the schedule, recall that they have already seen structures down there.