Rio Secreto Underground River

Discovered as recently as 2007, the Rio Secreto underground river is now one of Yucatan's top natural attractions. Wade through its pristine waters, admiring stunning stalactites and stalagmites. The visit lasts about 90 minutes and you'll cap it off with a xtabentun liqueur. The Plus option features cycling and rappel and the Privilege has access to the nature reserve.