Vyalova caves system is a system of 3 caves that are located on a lower plateau of the Chatyrdag mountain, Crimea.

The system consists of 3 caves (has 3 entrances): Uchunzhu cave, Vyalova cave and Obval'naya cave (or Landslip cave, Crimea).

The system is names after Russian speleologist Vyalov.

A cave or cavern is a natural underground space large enough for a human to enter. The term applies to natural cavities some part of which is in total darkness. The word cave also refers to smaller spaces like rock shelters, sea caves, and grottos.

Speleology is the science of exploration and study of all aspects of caves and the environment which surrounds the caves. Exploring a cave for recreation or science may be called caving, potholing, or, in Canada and the United States, spelunking (see caving).

The formation and development of caves is known as speleogenesis. Caves are formed by various geologic processes. These may involve a combination of chemical processes, erosion from water, tectonic forces, microorganisms, pressure, atmospheric influences, and even digging.

Most caves are formed in limestone by dissolution.

Solutional caves are the most frequently occurring caves and such caves form in rock that is soluble, such as limestone, but can also form in other rocks, including chalk, dolomite, marble, salt, and gypsum. Rock is dissolved by natural acid in groundwater that seeps through bedding-planes, faults, joints and so on. Over geological epochs cracks expand to become caves or cave systems.

Vyalova cave (пещера Вялова) is a cave in a lower plateau of the Chatyrdag mountain, Crimea. It also has an 'old' name: Togerik-Alan-Hosar (Тогерик-Алан-Хосар).

The cave has a vertical entrance of 31 m depth, which gradually (at a depth about 16 m) transforms into a steep (almost vertical) shaft. The total depth of the cave is 124 m. It belongs to the Vyalova cave system.

The cave is named after Russian speleologist Vyalov.