[Polybius]

Sea Eyes. At ther risk of sounding sappy, that's beautiful. They can actually hear each other though the land one? How long are they normally?

Well, since the tunnels interconnect with each other and with cenotes like the tunnels in a termite nest, they can be dozens of miles long.

There was a National Geographic article (10/01/2003) about divers exploring the cenotes and the interconnecting cave tunnels that we took with us to the Yucatan trip. The article had a fold-out illustration diagram that include a tunnel reaching the sea and opening at the seabed to create an "Ojo de Mar".

[Richard Kimball]

Like much of nature, the caves are beautiful and dangerous. I've done caving and I've done diving, but cave diving is IMHO, the most dangerous sport in the world, other than sitting in a box and lighting sticks of dynamite.

I've known a few very crazy people who dive the connections between the cenotes, and one of the guys I worked with on a dive team had recovered bodies from Jacob's Well in Texas, but I've never done it.

Money is an issue, but it's also incredibly risky.