354 R. H. MATHEWS. 
in the vicinity, containing aboriginal drawings. Being anxious 
to obtain all the information I could on the subject, I got some 
of the residents to act as guides, and visited two of the most 
interesting of these caves. Thinking that the result of my inspec- 
tion may be of some interest to the members of this Society, I 
have prepared a few notes, with illustrative diagrams, which I 
will now place before you. 
I will first deal with the cave shown on Plate 19. This cave 
or rock-shelter, is a large overhanging ledge of Hawkesbury 
Sandstone on the west side of Bulgar Creek, a tributary of the 
Wollombi Brook, and is situated within Portion No. 2 of six 
hundred and forty acres, in the Parish of Milbrodale, County of 
Northumberland, about a quarter of a mile southerly from the 
old road from Sydney, over the Bulgar Mountains, to Singleton, 
and is about fifteen miles south-westerly from the latter town. 
The cave or shelter, is in one of the ordinary low rocky escarp- 
ments of the Hawkesbury Sandstone which are very numerous in 
this part of the district ; the direction of the escarpment being 
north-westerly, and the dip north easterly. The cave is about 
eighty feet above the adjacent valley, and faces the north-east, 
consequently the sun shines into it, on fine days, all the year 
round. There is also a good drainage from the front of the cave, 
which keeps it dry and free from moisture. The shelter is about 
fifty-eight feet long, and is twenty-three feet high from the ground 
to the top of the ledge, the depth from the front to the back of 
the interior being twenty-two feet at the widest part. The thick- 
ness of the overhanging rock at the front is about three feet, 
. gradually getting thicker as it goes back. The floor of the cave 
is, in places, sandstone, 7m siéw, in others, disintegrated sand, but 
too shallow for burials to have taken place. There is no trace of 
any hearth-rubbish, leading to the belief that the recess has not 
been used to any great extent as one of residence. 
I will now proceed to briefly describe the figures. Standing in 
front of the cave with the face towards it, the most prominent 
object is the grotesque figure of a man about eight feet high, with 
