St. Cuthberts Swallet
LAKE
CHAMBER : problems solved and unsolved
a) Problems solved
Water leaves the main Stream at the site of a dig a short distance upstream of the Dining Room. In low water conditions the dig can swallow the whole of the Main Stream. Underneath Cerberus Hall is a pool of variable dimensions, usually about twelve feet long, one to three feet wide and three feet deep. Water enters the pool through an impenetrable crack about two feet above the water level at the eastern end of the pool and leaves through a mud choked sump at the north-west end of the pool. It was thought by many leaders that water in the pool came from the mainstream and went to the lake, but this view had its opponents.
Water temperature and hardness measurements by the author
showed that the Cerberus Pool must certainly have come from the Main Stream,
and the
b) Problems unsolved
No pattern has yet been found to explain the variation of
the water level in the
It would be extremely difficult to prove conclusively that
water from the Lake does not resurge into the bed of the Main Stream somewhere
downstream of
It is not known whether the pools discovered last year to
the north of the Lake are part of the drainage from the Lake, or part of
another inlet to the
A passage in
c) The possibility of an undiscovered
breach of the Gour-Lake Fault.
The intermittent streams draining the area west of Rocky
Boulder Passage and north of Curtain Chamber are not thought to enter the known
Main Stream, and water from the
The diagram published by D. Irwin (B.B. No. 241 p 47) also
raises the possibility of two separate drainage systems being developed along
the same fault, with an exit at the Duck and an exit somewhere between marble
Hall and the
The unknown breach at
R.D. Stenner
18th April 68
APPENDIX Results 10-2-68.
|
Concn. X 105(M) (M= ppm CaCO3) | |||
|
Bi-carbonate |
Calcium |
Permanent Hardness |
Temp oC |
Main Stream Dining Room |
117.4 |
130.4 |
24.6 |
7.83 |
Pool, Cerberus Hall |
117.8 |
130.4 |
24.2 |
7.90 |
|
124.9 |
138.0 |
26.7 |
8.65 |
Pyrolusite Stream, Gour Hall |
210.2 |
238.4 |
54.6 |
9.55 |
Precision of results: |
Bicarbonate ± 1.5 ppm Permanent Hardness ± 2 ppm Calcium ± 1 ppm Temperature ± 0.03oC |
St. Cuthberts Swallet Latest Discovery
On Saturday th April 1968 Mike Luckwill discovered a new chamber in the CANYON SERIES. He suggested that the new chamber be called FORBIDDEN CHAMBR as to reach it means passing a nicely decorated passage which would soon be ruined. The chamber is said to be quite big.