tarboat's photos with the keyword: sinkhole

Whilst out walking we came across this coal shaft that had let go. Until the collapse there was no sign on the surface of there being a shaft apart from the low spoil mound. A public footpath runs alongside and no doubt thousands of feet have passed over the capping under the grass. This pit will have worked the Upper and Lower Holcombe Brook seams in the late 18th or early 19th centuries. These seams were very thin, probably a maximum of 18 inches. The depth of the shaft is likely to be around 80ft.