The Pit

The Pit is the cenote as cathedral. You drop down a flooded shaft wide enough to swallow a building, and on late mornings a column of sunlight follows you down, fanning into blue haze. Around 30 m a layer of hydrogen sulfide drapes the debris mound like ground fog, and divers hang above it watching teammates dissolve into silhouette. Tree branches reach out of the mist; the shaft itself continues far past recreational depth for the exploration community. It is a simple dive in structure — down, marvel, up — but depth, darkness below, and awe demand real discipline.

您此行的高光时刻: Light beams down a huge shaft, the sulfide cloud at 30 m, silhouettes over the mist, cave-system scale.

地形地貌: A vast vertical shaft in the Sac Actun system; a debris mound rises from far below, wrapped at about 30 m in a hydrogen-sulfide haze.

入水方式: Jungle track from the Dos Ojos park, then a stepped descent to a small deep pool.

危险因素: Depth is the hazard — the visibility erases all sense of it. Fix a hard floor, watch gas, and ascend on plan.

许可证与规定: Entrance fee via the Dos Ojos park; guided diving only.

保育: Part of the Sac Actun system; stay off the mound and leave the haze layer undisturbed for the groups behind you.

高氧（Nitrox）: 在此值得使用——各潜点深度落在富氧空气（nitrox）能有效延长免减压时间的区间（前提是持有相应认证）。