Its great differentiator is its caves and adventure activities: unlike Izamal or Valladolid, where historic architecture dominates, Tekax is experienced underground, with caves, calcium-carbonate formations, rappelling, zip lines, ATVs and Maya communities. Recommended: hire a cave guide, go rappelling or zip-lining only with established operators, visit the San Marcelino Maya village, tour the center, try traditional cooking and wear a helmet and proper footwear.