George Dixon
Google
Pretty cool, and if your in Tulum for a few days with a car, definitely worth the drive. We did it on the way to Valadolid for a day.
Bit off the beaten track, and the staff aren't very nice when you arrive. It's expensive and they are hot on cameras, so if you bring your DSLR or similar, it's going to cost you.
Overall a cool experience and nice to see.
Take a wander, enjoy the scenes.
Easily doable in like 1 hour or so. Can spend longer if you desire though.