Early this morning I was doing some tramroad and quarry photography in the frost and saw distinct near-continuous wisps of warm air vapour rising from a small cave entrance at NGR SO 2506 / 1150.
This a prominent entrance about five feet wide and three feet high on the side of the tramroad at the east end of the cutting immediately south of the main Pwll Du quarry.
I approached it by walking from the west along the base of the cutting. The entrance is immediately east of a north-south transverse wall across the cutting. The wisps of vapour were so prominent and near-continuous, that I thought there might be a smouldering fire lit in the lee of the wall.
Can anyone provide any information about this intriguing entrance?
Many thanks!
This a prominent entrance about five feet wide and three feet high on the side of the tramroad at the east end of the cutting immediately south of the main Pwll Du quarry.
I approached it by walking from the west along the base of the cutting. The entrance is immediately east of a north-south transverse wall across the cutting. The wisps of vapour were so prominent and near-continuous, that I thought there might be a smouldering fire lit in the lee of the wall.
Can anyone provide any information about this intriguing entrance?
Many thanks!