Actun Tunichil Muknal, BelizeCave You swim into this one. A river passage runs about two miles back under the Tapir Mountain Nature Reserve before it sumps, and above it another mile of dry chambers holds what the Maya left: pottery punched with kill holes to let... Open it on the map
The Great Blue Hole, BelizeCave A drowned cave. This is a limestone cavern that formed on dry land during the ice ages, when the sea was far lower, and stalactites recovered from inside date its four growth periods to roughly 153,000, 66,000, 60,000 and 15,000... Open it on the map
Every one of these is sourced
Each entry links to the record it came from. Access rules, permits and land status vary by country and are noted where the source states them, check locally before you go.
