Ordinskaya Cave is located on the left bank of the Kungur river, the Perm Region. Itâ€™s the longest underwater cave in Russia and the second longest underwater cave in Eurasia. Here you can read more about Russian caves.
The cave consists of a “dry” and an underwater part. The length of its underwater passages is more than 4,600 m while its dry part is 300 m long.
Ordinskaya Cave is gypsum, it is characterized by a low water temperature (it rarely rises above 7 degrees Celsius), numerous underground galleries, high water transparency and low turbidness.
Its transparency is deceptive though. Once you make an abrupt movement with your fins, visibility will drop to zero.
In the interests of safety, divers are outfitted with two sets of cave diving equipment. The total weight of this equipment exceeds 80 kg.
This is where you can breathe in some air.
This cave diving equipment configuration which has diving cylinders mounted alongside the diver, below the shoulders and along the hips, instead of on the back of the diver, is called sidemount. It is a popular configuration with advanced cave divers, as smaller sections of cave can be penetrated and tanks can be changed with greater ease.