The Pit

The Pit is a large underwater cenote with a steep vertical shaft and a vast cavern chamber, noted for dramatic pillars of sunlight through a small surface opening, extensive stalactites and limestone formations, a distinct halocline, and a deeper sulfuric cloud. It is a very deep, visually striking cavern dive with excellent water clarity and is widely regarded as one of the region's most spectacular cenotes. Entry is from shore via wooden stairs and a platform; divers typically descend vertically into the shaft and ascend along the cavern walls. A halocline occurs at about 12–15 m and a hydrogen sulfide cloud appears around 25–30 m; guided dives commonly reach 30–35 m while the cavern continues much deeper. Visibility often exceeds 30 m and water temperature is about 24–25 °C. There is no significant current, but the overhead environment and depth require advanced/cavern training, strict cave/cavern practices (including rule-of-thirds gas management) and staged decompression procedures; gases trapped in the cenote should not be disturbed.