CARWARY.
In a hasty ride which I took as far as Carwary in 1832, I was conducted by my friend Mr. Ryrie to a remarkable cavern under white marble where I found trap; a vein of ironstone of a fused appearance; a quartzose ferruginous conglomerate; a calcareous tuff containing fragments of these rocks; and specular iron ore in abundance near the same spot.
But still further southward and on the range separating the country at the head of the Shoalhaven river from the ravines on the coast, I was shown an antre vast which, for aught I know, may involve in its recesses more of the wild and wonderful than any of the deserts idle which I have since explored.
VAST SUBSIDENCE ON A MOUNTAIN THERE.
A part of the surface of that elevated country had subsided, carrying trees along with it to the depth of about 400 yards, and left a yawning opening about 300 yards wide resembling a gigantic quarry, at the bottom of which the sunken trees continued to grow. In the eastern side of the bottom of this subsidence a large opening extended under the rock and seemed to lead to a subterraneous cavity of great dimensions.
GOULBURN TOWNSHIP.
November 1.
Taking leave of my kind host at an early hour, I continued my ride, passing through the new township in which, although but few years had elapsed since I had sketched its streets on paper, a number of houses had already been built. The Mulwary Ponds scarcely afford sufficient water of the supply of a large population there; but at the junction of this channel with the Wollondilly there is a deep reach not likely to be ever exhausted.
GREAT ROAD.
The road marked out between this township and Sydney led over a country shut up, as already stated, between the Wollondilly and the Shoalhaven rivers. These streams are distant from each other at the narrowest part of the intervening surface about ten miles; and as each is bordered by deep ravines the middle portion of the country between them is naturally the most level, and this happens to be precisely in the direction most desirable for a general line of communication between Sydney and the most valuable parts of the colony to the southward.