| Rumbling Hole | |
|---|---|
Two cavers rigging the entrance pitch |
|
| Depth | 119 metres (390 ft) |
| Length | 213 metres (699 ft) |
| Geology | Limestone |
| Location | |
|
|
|
| Gridref | SD 6717379128 |
| Location | Leck Fell, North Yorkshire, England |
| Access | |
| Access | CNCC Permit |
| Discovery | 1932 |
| Difficulty | Grade 4 |
| List of entrances | Rumbling Beck Cave sink hole |
| Cave survey | cavemaps |
Rumbling Hole is one of the many fenced off sink holes near the road on Leck Fell, North Yorkshire, England. The entrance shaft is approximately 50m deep and often with a small waterfall cascading down the side opposite the single solitary Yew tree that grows at the edge of the vertical shaft and provides a convenient belay point for the entrance pitch.[1]
A connection was made between Rumbling Hole and Lost John's Cave by Lancaster University Speleological Society in 1985.[2]
During a visit to Rumbling Beck Cave (a short horizontal cave that sinks 30m away from the main sink-hole and discharges its stream into the main shaft) in late 2007, the Misty Mountain Mud Miners noticed an unexplored hole in the side of the shaft and, over six trips, pushed a new 350m long route, named the Dead Bobbin Series, down to 118m below surface level,[3] installing £160 of fixed bolts.[4]