Geez...I used to take the ferry across from Cozumel and make landing there and drive on inland and do my own archaeological searches...lots and lots of undiscovered stuff on the Yucatan.
Might be a lot of new, old stuff get washed up on this. You might want to consider going back down there the first chance you get.
We were there in August, went to Tulum. The vegetation was really torn up then from Emily. I can't imagine how awful it looks now...