On July 27-29, 2020, reconnaissance surveys of rock outcrops near the Idrisovskaya Сave and on the Bolshoy Limonovsky Ridge were conducted in the Yangan-Tau Geopark (by scientists Anatoly Yakovlev and Tatyana Yakovleva).
The goal was to find out the prospects of loose deposits of karst cavities (canopies, grottos, caves) for the presence of fossil bone remains of small vertebrates (amphibians, reptiles and mammals). Based on the fossils of small vertebrates, it is possible to restore the history of fauna development and paleoecological reconstructions of the Yuryuzan river valley.
As a result of research, three new locations of subrecent bony remains of small vertebrates were discovered. It has been established that the most promising, where Holocene and possibly late Pleistocene remains of small vertebrates can be found, are deposits in a cave on the Bolshoy Limonovsky Ridge.
Expedition work on the territory of the Geopark became possible thanks to the comprehensive support provided by the Director of the Yangan-Tau Geopark Ildar Sadykov,scientist and research assistant Polina Polezhankina and the owner of the Yurt Camp Shaitan-Kudey Ilfat Ismagilov in Idrisovo village.