THE SNOWBALL CAVE.
About 40 yards through a hall, running north-east of the Fossil Bone Cave, is the Snowball Cave, which is about 9 feet high, 25 or 30 feet long, and from 6 to 10 or 12 feet wide. It runs north-north-east. Its distinctive feature is that its roof and a portion of its walls are covered with little white masses like snowballs. Some of the patches of carbonate of lime stick to the walls in isolated discs, and others are massed as though snowballs had been thrown at a mark, and a number of them had stuck close together. Some of the stalactites in this chamber have been formed by the upward pressure of water, and assume many tortuous shapes. An interesting feature of this portion of the caves is the existence of a number of stalactites which show how readily vibration is communicated from one to another. The visitor puts his finger to the end of a stalactite, and when an adjacent one is struck so as to make it sound, it is perceptible that the vibration of the sounding stalactite is communicated to its silent neighbour.
There is one more chamber to visit in the Lucas Cave. To reach it the visitor ascends four steps, and travels north-west about 14 yards to the head of a wire ladder, which he descends to a place directly underneath the Snowball Cave, and then he goes down the steps into the Wallaby Bone Cave, over the entrance to which is a very pretty cluster of stalagmites, from 6 inches to 18 inches long, and varying from the thickness of a straw to three-quarters of an inch in diameter. The floor is covered with wallaby bones, and in the immediate vicinity are quantities of osseous breccia.
