Куйбышевское водохранилище
Syukeyevo Caves (, , "Söyke mäğaräläre") were a group of caves in what is today Kamsko-Ustyinski District, Tatarstan, Russia. Located near the village of Syukeyevo until 1958, they were destroyed by an eruption of the banks of the newly filled Kuybyshev Reservoir.