585 
“ Mount Lang is situated on tiie eastern bank o£ one of the heads of Kinrara 
Creek; its summit is about four hundred and forty feet above its base. The hdl 
l)resent8 a steep face to the west, with a somewhat gradual slope to the east, and is 
formed of very vesicular basalt, which sometimes has a reddish hue. Its western face 
has a vertical wall of bare basalt, through which fragments of scoria are scattered. 
Bound about the base the fragments of basalt have a tendency to weather into rudely 
hexagonal blocks. 
“Leaving Mount Lang and travelling almost due north, with the object of 
reaching Mount Eazorback, several minor ‘ pnys ’ are passed. These were only visible 
when in close proximity, owing to the dense timber. 
“ About three miles from Mount Eazorback, and to the south-west of it, a 
conspicuous hill formed of vesicular basalt was examined. This hill is in shape semi- 
circular, with its diameter running north-west and south-east. It is a breached lava 
cone, the stream flowing north-east from it and thence down one of the heads of 
AnthiU Creek. 
“ Mount Eazorback is situated in the northern portion of the area, and is by 
far the largest and most conspicuous of any of those occurring within the Burdekin 
watershed. 
“ Its shape is that of a long razor-backed ridge, with a conspicuous eminence 
forming its highest summit, which, by aneroid, is 680 feet above its base. The 
mountain is composed of basalt of a reddish colour near its highest point, but of a 
bluish-gray throughout. 
“ The basalt is very vesicular and somewhat glassy in places. From the summit, 
as many as twenty-live minor ‘ puys ’ are visible; these appear to be much more 
plentiful to the west. They assume all shapes and sizes ; sometimes merely a slight 
elevation marks their position, as though the molten matter had merely oozed out from 
an orifice and flowed away on all sides. 
“ In other parts of the district outlying patches of basaltic lavas are met with. 
“ A well-marked area is to be seen in the vicinity of Mount Eox, near the head 
of one of the tributaries of the Douglas Eiver. 
“ Mount Fox, an extinct volcano, is the culminating point of this area. Its 
altitude is 2,870 feet above sea-level. In shape it is a truncated cone. The summit 
comprises an area of two or three acres, surrounded by a low semicircular wall, about 
thirteen to fourteen feet in height, on the north, with a shallow hollow or depression in 
the centre. To the south this wall has been breached by a lava which flowed down that 
side of the mountain, filling up all the inequalities of the surface, and forming a plain 
of no inconsiderable extent. 
“ The mountain is almost devoid of timber, save a few patches of scrub on four 
sides. The portions devoid of timber are covered with sheets of vesicular lava, now 
broken up into blocks of all shapes and sizes. These timberless portions, now overgrown 
with long grass reaching to a height of about 2 feet, mark the site of old lava flows. 
“ From the western side of the peak a conspicuous How follows the eastern bank 
of a gully flowing south-west at a considerable elevation above the creek. The flow 
ends abruptly to the south-west; its surface is covered with blocks of compact basalt. 
“ All round the mountain denuded tables of basalt can be seen. A conspicuous 
one consists of a semicircular ridge of compact lava, about 30 yards in width, trending 
generally north-west for about a quarter of a mile. The summit of this is about 2,310 
feet above the level of the sea. 
“ Nearly due west from this a section, at an altitude of 2,220 feet above sea-level, 
shows the basaltic lavas resting on a bed of quartzose grit. 
