Kuom Tiankeng
One of the tiankengs of Aouk Underground River. Kuom Tiankeng is some 100 – 160 m deep, with a volume of 15 – 20 million cubic meters.
Aouk Underground River
Amazing system of more than 6 km long underground passages with one of the most powerful underground rivers in the world. System has three tiankengs.
Cenote Angelita or… “The Nightmare”
Unique water-filled sinkhole with a ghostly layer of hydrogen sulfate at the depth of some 30 m and seawater below it.
Kitum Cave – salt mine of elephants
Unique caves in pyroclastic rocks, up to 250 meters long. Possibly created by elephants and other animals digging the salt in caves up to this day. Kitum cave became known worldwide after two people caught the extremely dangerous and deadly Marburg virus disease in this cave.
Liang Bua – the cave of the mysterious Homo floresiensis
In the cave (and only here) there were discovered remnants of a newly discovered, extinct species of human – Homo floresiensis.
Abanda Caves – caves of unique bat-eating crocodiles
Group of caves in lush rainforest. In these caves lives unique subspecies or, rather, newly developing species of dwarf crocodiles (Osteolamus tetraspis) that feed on bats.
Dragon Hole
World’s deepest known undersea sinkhole, 300.89 m deep.
Naica Cave of the Crystals
Cave with giant selenite crystals up to 12 meters long and 55 tons heavy. The air temperature in the cave is up to 58 °C high. Now flooded.
Hranice Abyss (Hranicka Propast)
The deepest known underwater cave in the world. The total known depth of this cave is 473.5 m, known depth of the cave lake – 404 m. It is expected that it is much deeper – up to 1200 m deep.
Pozzo del Merro
Extremely deep water-filled sinkhole – a cave with at least 392 m deep waterbody, total measured depth – 472 m.
