Orda Cave system, or otherwise now as Ordinskaya Cave is the largest Gypsum* cave system in the world and the longest underwater cave in Russia, the second longest underwater cave in Eurasia. Located on the banks of the river Kungur, near the Village of Horde (Eastern Outskirts) in the region of Perm, Russia. (coordinates, 57.182oN, 56.887oE)
Orda Cave was first explored in 1993 by Igor Lavrov, a well known scientist & researcher of the Ural cave, he originality visited the cave with the intention of making topographical maps of the dry parts of the cave. Afterwards he invited Victor Komarov, a cave driver for the city of Ryazan to do the first reconnaissance dive in (what was consider at the time) one of the cave's underwater lake.
On his first dive Victor Komarov entered the water with a 7-liter tank, intending on only having to explore a small area, it can to Komarov sup-price that after the collapsing of the ceiling, he found himself in a area of further tunnels venturing off into more unexplored areas of the cave.
Key Fact's on Orda Cave.
Containing both area's of "Dry" and Underwater parts of the cave, Orda is currently measured as being over 4200 Meters long (13780 feet long) with 300 Meters (984 feet long) of "Dry" parts.
Because of the characterize's of Gypsum, Orda has an average water temperature of 4oC.
The cave enter is 50 meter's below sea level.
Gypsum
Is a soft mineral composed of calcium sulfate dehydrate, with the chemical formula CaSO4-2h20. Moderatly water-soluble (~2.0-2.5g/L at 25oC) and in contrast to other salts it exhibits a retrograde solubility, becoming less solubility at heighter temperatures.
Ordinskaya Cave Map
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