Cenote Zacil-Ha is an open-air Tulum cenote with a shallow, pool-like main basin, clear turquoise water, wooden decks, and an on-site restaurant that makes it an easy half-day stop. Most visitors come here to swim, snorkel, lounge, and jump from the platforms, while trained divers can use the connected passages that link into the wider underground system. The main basin is straightforward and family-friendly, but the overhead sections deeper in the system belong only to properly trained cavern or cave divers.