They afterwards visited another beautiful ice-cavern known as the glacier of Saint Sivres, into which a stream flows, becoming completely congealed.
There are many other ice-caverns in Bohemia, Hungary, the Hartz Mountains, and in various parts of North America. One of them, however, surpassing in size the others, is the cave of Yermalik, in the province of Kondooz, in the centre of Asia. When Kondooz was invaded by the savage warrior Genghis Khan, 700 men with their wives and children took refuge in this cavern, and offered so brave a defence, that after attempting in vain to destroy them by fire, the barbarous invader built up the entrance with large blocks of stone, and left them to perish of hunger.
Nearly forty years ago the cave was visited by two British officers, who had great difficulty in obtaining guides, as the natives believed the cave to be the abode of Satan. The entrance is about half-way up a hill, and about fifty feet in height, and about the same in breadth. Squeezing their way through a narrow passage between two rocks, probably the remains of Genghis Khan’s fatal wall, they came to a drop of about sixteen feet. Down this, by means of ropes, they were lowered by two men, who remained to haul them up again. Passing through a narrow tunnel, over a floor of smooth ice, they reached a vast hall, damp and dripping, the light of their torches not enabling them to form any idea of its size. Here they discovered hundreds of skeletons, the victims of Genghis Khan’s cruelty. Among them was one, evidently the skeleton of a mother, holding in its long arms the skeletons of two infants. The bodies of others had been preserved, and lay as they had fallen, shrivelled into mummies. After leaving this vast sepulchre, they proceeded through several low arches with smaller caverns, until they reached an enormous hall, in the centre of which was a prodigious mass of clear ice, in the form of a bee-hive, its dome-shaped top just touching the long icicles which depended from the jagged roof.
A small opening led into the centre of this wonderful ice-heap, which was divided into several compartments, presenting numerous fantastic forms. In some the glittering icicles hung like curtains from the roof, in others the whole compartment was as smooth as glass. The prismatic colours which presented themselves as the torches flashed on the surface of the ice were beautifully brilliant.
On every side they were surrounded by solid ice, and, scarcely able to keep their feet, they slid noiselessly over the glittering surface of the mysterious hall.
The icicles having reached the floor of one of the largest of the compartments, had the appearance of pillars supporting the roof.
In Italy and the South of France there are caverns with some distant aperture through which the wind enters, and being cooled in its subterraneous passage, sends forth a cold blast at the other end, such as the Aeolian Cavern, near Terni. It has been utilised by the proprietors of some of the neighbouring villages, who have conducted the cold air to their houses by means of leaden pipes, which on sultry summer days convey a pleasant coolness through plaster-of-paris masks, with wide distended mouths, fixed in the walls of the rooms.