Bung Hole Series Downstream Sump:

The start of the sump is very low but enlarges after 30 m to a pleasant elliptical tube for the next 120 m until a confusing area is reached after 150 m with several low and unexplored bedding planes.

Warning:  This should only be attempted when water levels are low because of the risk of regaining base against the strong current.

Overspill Passage Sump:

The low sump at the end is choked with sand, this hasn't been dived.

Oxbow Sump:

A small sump in south wall just downstream of Treasury Sump, this is too low for diving.

Window Inlet Sumps:

A 1.2 m deep sump pool leads to an easy tube for 16 m to 40 m of low streamway.  A second sump is reached, 3 m long but tight (don't free dive).  40 m of low crawling passage over loose slabs until the passage is blocked by a boulder, the stream enters from an impassable slot in the left wall.

Puttrell's Pool:

This is a low airspace pool that isn't a sump but stopped exploration downstream for many years.

Streamway Sump:

This is a short sump that reduces to a low duck in low water conditions.  This can be bypassed by the short bypass.

The Bottomless Pit Sump:

A pool that has been dived to a depth of -8m but is choked with mud and rocks.

Bottomless Pit Inlet Sump:

A tight passage leads to a sump that is too tight to dive.

Stemple Sump:

This is located in the Halfway House Series.  The large underwater passage descends on the vein, underneath a large rock (careful has this is held in place by an ancient stemple.  At 25 m from base, the roof meets the floor of fine silt at -16 m depth.  THERE IS NO ACCESS TO THIS SITE.

West North West Passage Sump:

A flooded passage beyond Rowse Hall in the Halfway House Series is choked with boulders at -4 m depth.  Dries up in drought.  THERE IS NO ACCESS TO THIS SITE.

Pilkington's Passage Sump:

A small pool leads to a body sized passage with a mud floor for five meters to where the roof meets the mud floor.  No way on could be found.

Reference:
CDG Newsletter no 176, Jul 2010. Page 25

Assault Course Sump 1:

Situated on approach passage to Pilkington's Cavern, approx 30 m from the far canal.  A small waterlogged tube with slot in floor, too small to dive and end is very close to Far Canal.

Assault Course Sump 2:

Downstream End of the Assault Course, the canyon sumps close to a point with the Far Canal.  Too small to dive.  A similar choked sump has been noted in Far Canal in draught.

Pit Props Sump:

Under the left wall at the start of the passage, steeply descending passage enters a low bedding at -2m, followed in small bedding for 3 m but carries on constricted.  The water that sinks here emerges from immature bedding in south wall just below the Bung Hole Ladder.

Pit Props Inlet Sump:

Steeply descending body sized tube followed for 4.5 m to a slit blockage.

Whirlpool Rising Sump:

HMS Edinburgh - by Pete GlanvillSmall pool near end of whirlpool Passage enters a pleasant bedding tube for approx 45 m emerging in HMS Belfast, a large airbell.  The sump carries on through a bedding passage for 20 m emerging into HMS Edinburgh.  The sump carries on in a bedding passage, after 57 m, a pot is descended to where it becomes jambed with boulders at -11m depth. At the top of the pot, a fine airbell called Mary Rose can be gained, the passage continues low and shallow beyond this point before reaching a low junction 143 m from base.

 

 

 

 

 

Whirpool Stopes Sump:

A body tight tube dips down to water after 10 m, this looks too tight to dive.

Bathing Pool:

A 7 m diameter pool has been dived for approx 23m depth; a hole in one of the walls was passed to reach a constriction at 26.3 m depth.

Secret Sump:

A descending tube leads via a mud squeeze into a vertical pot.  This 1 - 1.5 m pot has mud covered walls so visibility goes straight away.  At -38m depth a restriction has to be passed to -41 m, the current limit to the sump.  The shaft appears to continue below.

Main Rising:

Main Rising - by Pete GlanvillA impressive sump pool at the head of the Speedwell Stream, the submerged pot descends vertically for 20m, a silt floor is met, the carries on in a fine phreatic to a floor at - 36m.  A large shaft ascends to -20m to meet a sand col; Bog Pipe Rift rises diagonally upwards to a depth of -3m.  A small hole with a notable current is passed leads down to -15m to a slit floor, this low passage passed through an arch roof to reach The Doux De Castleton, a fine shaft descending downwards. Above the shaft, an airbell can be reached.  The shaft can be descended for -33 m, a large tunnel continuing for 20 m to a further shaft descending below.  The New Leviathan is just off vertical, this descends to -65m depth, a large phreatic rift passage, Remembrance Way descends to -72 m. A low passage appears to go off but is a solid sand choke.

References:
Valanthen, J. 2006. Cave Diving Group Newsletter 161. Page 16.
Groves, M. 2004. Cave Diving Group Newsletter 150. Page 14 - 17.

Cliffhanger Sump:

The sump is very low and awkward for the first 10 m, after this, the passage is more comfortable going reaching a small chamber after a further 20 m.  Beyond here, a low shingly bedding reaches a solid choke 40 m from base.

Joint Effort Sump 1

A small shallow tube that has never been dived.  A bypass near this sump regained the stream in Puzzling Evidence Chamber, this sinking in boulders so there is no point diving this sump.

Joint Effort Sump 2:

A 20 m long silty tube emerges into a small chamber.  A rift upwards leads to a window into Spidros Aven.

 

News Flash

Speedwell Bung Ladder

The Bung Ladder in Speedwell MIne was found to be damaged so due to the the Bung Ladder has been removed but it will return once fixed. Four anchors have been installed that cavers can use. Cavers heading down the Bung can rig an abseil rope but trips 'up-hill' will not be able to climb the Bung. A fixed line may appear here but Derbyshire Caving Association (DCA) reminds cavers that ropes fixed to any DCA anchor are NOT the responsibility of the DCA and their use is at your own risk.