Grotto Of Arcy, a vast and beautiful sta-lactitic cavern, which consists of many compartments, near Vermenton, department of Yonne, in France, 12 m. S. S. E. of Auxerre. The hill in which this remarkable cavern exists stretches into the valley of the river Cure. One of the compartments of the grotto is 1,200 feet long, 85 high, and 40 wide. In the first two compartments are found large blocks of stone, and in the second compartment is a spring of good water. In the other chambers stalactites hang from the roof, while stalagmites rise column-like from the ground. The caverns are supposed to have been quarries in former times, but have been abandoned so long that every trace of human labor is obliterated. It is said that the stone with which the cathedral of Auxerre was built was taken from the grotto of Arcy.