Originally posted by the owlbear
It's amazing to think that the Maya or whoever did all this dive work with no scuba gear, found these cavern systems leading off these cenotes, and
then built temples and roads with just rocks and a fire to give extra light. Mind boggling, in my opinion. But then again, look at their grasp of
astronomy and mathematics. Chalk one up for human ingenuity!
I'm pretty sure the video said the the caves that the scuba divers accessed were connected to other cave systems, meaning that the Maya probably
accessed them from above-ground means. But it's still absolutely fascinating that they so extensively developed their culture underground.
edit to add - the femur they found was apparently fossilized. It generally takes about 10,000 years for that to happen to a bone, and there were
several different species of large mammals roaming around N and S America at the time. I wouldn't get your hopes up of finding some giant human
skeleton.
[edit on 7-7-2010 by Son of Will]