BRECCIA ON THE SURFACE.
Perceiving that the breccia, where it occurred below, extended to the surface, I directed a pit to be dug on the exterior about 20 feet from the mouth of the cave and at a part where no rocks projected. (N, Plate 44.) we found that the hill there consisted of breccia only; which was harder and more compact than that in the cave and abounded likewise in organic remains.
Finally I found on the summit of the same hill some weathered blocks of breccia from which bones protruded, as shown in the accompanying drawing of a large and remarkable specimen. (Plate 46.)
PLATE 46: ROCK OF BRECCIA FOUND ON THE SURFACE ABOVE THE LARGEST CAVERN AT WELLINGTON VALLEY.
T.L.M. del. A. Picken Lith. Day and Haghe Lithographers to the Queen.
SIMILAR CAVERNS IN OTHER PARTS OF THE COUNTRY.
Other caverns containing breccia of the same description occur in various parts within a circuit of 50 miles, and they may probably be found throughout the limestone country not yet examined.
AT BUREE.
On the north bank of the Macquarie, 8 miles east from the Wellington caves, and at Buree, about 50 miles to the south-east of them, I found this breccia at considerable depths, having been guided to it by certain peculiar appearances of subsidence and disruption, and by yawning holes in the surface, which previous experience had taught me to consider as indications of its existence.