Travelling from the passage leading to the Fossil Bone Cave N.N.W. about 40 yards, and passing through a cutting N.W. about 30 yards, the visitor comes to "The Sparkling Rock." A cutting, five feet by two feet, forms the entrance to a spacious hall, where is seen the Sparkling Rock, large and shelving. The principal portion of it is slightly coloured, but the lower part is beautifully white. It is hung with large stalactites and fleecy pendants. Some of the formation resembles sheepskins, with the woolly side outwards, thrown negligently over the ledges. From this point the course runs west about 30 yards through a hall from 20 to 25 feet high, and from 15 to 20 feet wide, and thence north about 40 yards to the Crystal Rock. About 14 yards west from the Sparkling Rock, and by a road wide enough for a coach and four, there is a large upward shaft of about 100 feet to the Grotto Cave, which, as previously stated, is between the Helena and the Lucinda caves in the left-hand branch. Here the tourist gets a good idea of the way in which the two branches of the Imperial Cave are situated with regard to each other. The right-hand branch is the lower series. The left-hand branch is higher up in the interior of the mountain, and to the south-east, with the exception of the Grotto Cave, which is immediately overhead, and about 100 feet from the Sparkling Rock. On the left-hand side of the passage, and about 25 yards from the Crystal Rock, is a very pretty grotto of formation, with an overhanging ornamental mass like a canopy. Up above, about 40 feet, is the opening to an unexplored cave, the mouth of which is composed of solid shining rock, with white stalactites. There are also, round about, coloured stalactites varying in length from an inch to a couple of feet. The remainder of the passage is lofty and rugged.