Samarskaya oblast is a paradise for speleologists, cause it has a lot of caves, deso-
late mines and river grottos.
Brothers Grave Cave is probably the largest one. It is called after the first explorers who described it. It is deep, picturesque and still not explored completely. The forks inside the cave may go narrower and narrower and then suddenly turn into a large halls. Many years ago some people who tried to explore it were killed by a sudden cave in. Since that few people ventured to enter the cave.