Park & nature
Sistema Sac Actun
Some booking links are affiliate links. If you book through them, we may earn a small commission at no extra cost to you. We never let this influence which places we recommend.
Sistema Sac Actun is a vast underwater cave system stretching over 370 kilometers, making it one of the longest in the world. It features a network of flooded caverns and cenotes with exceptionally clear waters, stalactites, and stalagmites. Visitors can snorkel in open cenotes like Gran Cenote or dive into the cave passages for a surreal experience. The system is home to unique geological formations and ancient fossils, offering a glimpse into the region's subterranean wonders. Guided tours are essential for safety and to appreciate the cave's scale.
Don't miss
- Gran Cenote: a popular open cenote with turquoise water and easy snorkeling access
- Cave diving in the Dos Ojos section: see dramatic stalactite formations and haloclines
- Fossilized marine life embedded in cave walls, evidence of the area's prehistoric seabed
Tickets & tours
Ways to visit Sistema Sac Actun
You can usually visit on your own. A tour is worth it for transport, a guide, or combining nearby sights into one day.
Cheapest way inChichen Itza from Tulum with cenote, Valladolid and Mayan cuisine4.9★ · 372 travelers12–13 hoursFree cancellationFrom$29 per personSee dates →
Best full dayTulum Ruins, Turtles in Akumal and Cenote tour4.9★ · 2,121 travelers~8 hoursFree cancellationFrom$129 per personSee dates →
Private & flexiblePrivate Tour Cenotes Sac Actun The Longest Underground River5★ · 127 travelers~4 hoursFree cancellationFrom$200 per personSee dates →More attractions in Tulum