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Westcliff, Portland.
NGR: | SY 67908 71665 |
WGS84: | 50.54386, -2.45427 |
Length: | 875 m |
Depth: | 0 m |
Altitude: | 0 m |
Tags: | Cave |
Registry: | mcr-d |
Portland's premier cave for geological and sporting interest. Vadose passages below tabular-chert roof, heavily invaded by much younger mass-movement rifts. Some coloured formations. Access (2020) from abseil take-off alongside coast path on top of cliff or by climbing bolted sport route (Drag Racing Underground) from below. Ensure you are not breaking any seasonal bird-protection restrictions before using the main entrance. A second entrance (Queen's Entrance) exists 45 m south at the same altitude however there is no easy access from either above or below.
Connected to Sandy Hole via a very difficult and tight rift providing a long and sporting through trip. Combined length of caves is 2,489 m.
More commonly known as Blacknor Hole.
Alternate Names: Blacknor Hole
Notes: Karst / Mass-movement hybrid system
Hydrographic Feeds: Long-lost to erosion of catchment. Some evidence of river valleys to E & W of Portland.
Surveys:
Ariel Tunnel & Blacknor Fort System, M. Read, 1990
Blacknor Hole (page 1), M. Read, Weymouth & Portland Venture Scout Unit , 1988
Blacknor Hole (page 2), M. Read, Weymouth & Portland Venture Scout Unit , 1988
Blacknor Hole (Piccadilly Circus), M. Read, Weymouth & Portland Venture Scout Unit , 1988
Blacknor Hole, Hardye's School CCF, 1975
Blacknor Hole, McTavish, 1975
Links and Resources:
Search for this site in the MCRA Bibliography.
This entry was last updated: 2023-03-29 18:59:17
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