Cueva del Agua is a thermal water cave, with water temperatures in range 24-30 deg Celsius. In total the cave has over 7km of corridors, but there are still many unfinished leads going further inside... The visibility is great, though the cave percolates and silts very easily so need to be careful how you kick (or scoot). You can also experience halocline in here, and the mean depth of corridors is about 10 meters... So it can really be called the only "european cenote".
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