Kulogorskaya cave

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The Kulogory Cave, located in the village of Kulogory, 5 km northeast of the town of Pinega, is of interest. It was formed in gypsum and anhydrite of the Lower Permian.

The cave is a complex system of underground grottoes and passages, generally located at the same hypsometric level. Its total length is 1028 meters. There are 22 grottoes in the cave. The largest of them Shrenka's grotto is 30 meters long, 20 meters wide and 4 meters high. Almost everywhere the bottom of the cave is covered with a thick layer of clay or piled with stones.

As a result of rapid leaching of sulfate rocks in conditions of abundant moisture and low capacity of the roof, the cave is often collapsed, changing the configuration of underground cavities. In the western and eastern parts of the cave the air temperature in summer reaches 2°, and in the middle part it drops to - 1°,2°.

There are seven lakes in the cave, the water level of which coincides with the groundwater level. The largest lake in the grotto of speleologists is 6 m long. The cave is very damp.

In the cold part of Kulogorskaya Cave ice formations are widespread, (more information: Ice of caves) in the form of stalactites and stalagmites, bizarre ice crystals and icing crust.

The icing crust is especially prevalent in winter, when it is formed by the sublimation of water vapor as well as the solidification of water flowing down cracks.