- The Labyrinth
- Nasty
bit of complex small sharp phreatic passages, Electrolyte Level (1990)
- Lazy Labyrinth
- Complex bit near top of Garden Party (1992)
- Leadmine
- Complex area to left of Repton I, towards Maze and Siberia (1991) named
when entire survey done on 1cm of pencil lead
- Leadmine
- Complex area to right from T-junction below Vom pitch beyond Burble
(1991) (same place as above, but described from the other end, ie. the
direction of discovery)
- Left Hand Route
- Major
Route from Dewdrop/Becka Falls, via Arrow chamber to
Ragnarök (1988)
- Levitation
- Aven reached by short climb up from Dewdrop (1991)
- Lift Shaft
- (unascended) square aven in Arrow Chamber (1988)
- Limo Series
- All the passages and pitches beyond Vestabule (Night Soil, Knotwhat,
Oral, Doubting Thomas, etc.) (1994-1995)
- Limo's Revenge
- Grotty passage off Stomping (1995)
-
Llandudno Singers
- Narrowing rift at end of Magic Jumars series (1997)
- Loch
Gösser
- Long pool off Children's Railway/Triassic Park (1995)
- Locophobia
- Wide section
of Triassic park at junction of Children's Railway (1995) pun on Fear of the
Dark (actually unlocosomethingphobia) and general train sizedness of passage
- Loose Bowels
- Second
pitch of Checkout route to the Squeeze, immediately below Death's Door (1988)
- Lost in Space
- Major Deep Route in Chile to -440m (1999)
- Lost World
- Huge
Stomping Passage beyond Kein Zimmer Rift in Wheelchair Access (1997) [Several
Pictures - see visual tour]
- Lummat's Folly
- Cross
passage in Puerile Humour Series between Natural City and Dead Bat Chamber
(1996)
- Lying Down on the Job
- An
oxbow off the right hand branch of Batman Series in Puerile Humour Series
(1996)