Adzhimushkay quarry is an underground quarry in the city of Kerch. Gray porous Kerch limestone is a unique rock, nowhere else found. The catacombs are a monument to technology, production of building stone of ancient and medieval times. There is evidence that Christians in the catacombs of Kerch appeared in the 2nd century. Adzhimushkay quarry near Kerch is one of the most dramatic sites of the Great Patriotic War.