210 CARBONIFEROUS VOLCANIC ROCKS OF SOMERSET 
of lava (? lapilli) in a red earthy surface material. Further 
eastwards we have found no trace of lavas or ashes. 
(4) Goblin Combe. 
The volcanic rocks of Goblin Combe occur in two isolated 
patches, the more westerly about one-third of a mile to the 
south of Warren House, the other about half a mile south- 
east of the house. 
They may be approached (1) from the main road from 
Bristol to Bridgewater. Turn to the right along the lane 
about midway between the seventh and eighth milestones. 
The track leads past some new cottages (on the right), it 
enters the Combe, and about half a mile down forks ; the 
left hand, path ascends the hill, the right hand path passes 
through a gate. About a hundred yards further on is 
another gate entering a field ; the easterly exposure of the 
volcanic beds is in a very small quarry to the right, under a 
hanging wood. From this a road running near an orchard 
on the left may be reached by a gate in the lower hedge of 
the field. The Combe should then be followed down for 
half a mile, when a path is reached running up to the 
right to Warren House. The westerly exposure lies on 
either side of this path, about 40 or 50 feet up the slope. 
(2) From the village of Cleeve, which is reached from 
Yatton station. The path up the Combe should be 
followed to the point where the path leads off to Warren 
House. (3) From Nailsea via Brockley Combe. Turn 
ofi to the right through a gate just where the road 
emerges from the wood, and follow the path across the 
Warren, descending and bearing to the right. 
Lava as well as ash is met with at both these exposures : 
in each case the lava probably underlies the ash. The 
westerly patch includes two small exposures, the first of 
which occurs on the fork of the two paths S.S.E. of Warren 
