On returning to the mouth of the Arch Cave, the tourist proceeds towards the Carlotta Arch--so named in honour of a daughter of the Surveyor-General of New South Wales, Mr. P. F. Adams, who visited the caves 10 or 12 years ago, and has always taken an interest in their exploration and preservation. Ascending some stone steps, guarded by galvanised wire, an excellent view of the Ball Room to the eastward is obtained. The steps make access easy. Previously the rocks were slippery, in consequence of the polish given to them by the feet of marsupials, and the return journey was accomplished by holding on to a rope, and sliding down the glassy surface. The entrance to the Carlotta Arch is protected by a wire railing, about 35 feet by 8 or 10 feet. Passing through the iron gate, the visitor finds himself on a little platform. Hundreds of feet below is a gully, rippling at the bottom of which is a rill of water, which sings as it goes, and whose melody, softened by distance, is pleasant as the hum of bees or the carolling of birds. Above is a hoary rock, rugged and bare, with the exception of some clumps of lilies which flourish and bloom in its inaccessible clefts. From this point the tourist ascends the Nettle Rocks for about 60 or 70 feet. Some steps are to be cut here, and certainly they are much needed, for at present the journey is very toilsome and difficult. From the end of the protected portion to the summit--70 or 80 feet--the acclivity may be comfortably surmounted by ordinarily active people. The Carlotta Arch is about 100 feet high and about 70 feet wide, with an interior fringe of stalactites. The picture seen through it is exceedingly grand, including majestic trees and romantic gullies, huge mountains and immense rocks, with bold escarpments. The walls of the arch are pierced like a fortress. Its entire superstructure represents the union of two mountains by a natural bridge, clad with trees and shrubs and creeping plants which trail gracefully down its sides. On the summit are eucalypti, and conspicuous amongst them is an iron guard for the protection of passengers going over the viaduct. About half-way up this track from the arch to the bridge (which is the concluding portion of the new road from Mount Victoria), a good view can be obtained of McEwan's Creek, where the water has broken through the hills, leaving the limestone rocks and caves sometimes on the one side and sometimes on the other for a distance of three miles up the valley running northerly. To the westward is the Zigzag, leading to the cave-house by the route from Tarana, and from which can be obtained the grandest view _en route_ from Oberon to Jenolan. Here, after having spent an hour or two in the caves, it is pleasant to bask in the golden sunshine and watch the gaudy parrots flit by. From this point to the northward the limestone is visible to its full extent till it is overlapped by higher mountains. It is about three