Tremuda SE (2; east entrance)

A subtidal sea cave system consisting of two straight tunnels which join like a T. The E entrance is the bottom of the trunk of the T. Wide enough to turn (>5.5 m) at the crossing place. S entrance at NO 88138 83154 is much too narrow in most of the intertidal range to be navigable by kayak. However it is navigable with a tide level at or above 4.4 m, at which level there was just enough headroom at the W end of the tunnel from this E entrance to pass through from W to E on 15 July 22. The width at the entrance is 12.5 m.

Needs heights (could not use LRF on 14/7/22 because it was too bright to see the laser spot).

Links and Resources:

Not marked on any OS version.
E entrance clearly visible on satellite and aerial pictures.
Photo 1 shows Tremuda from the sea. The SE (2) cave east entry is on the left. NE (3) on right.
Photo 2 is from the south side of Tremuda. The S entrance to this cave is on the right. On left is S entrance to Tremuda Subterranean passage.
Photo 3 shows the inside of the EW tunnel at a tide level near 4.6 m. The tunnel continues on the left and is much lower.
Photo 4 a bit further in, also with tide level 4.6 m. The light from the S entrance can just be seen. A passage had been made through there just 25 mins earlier when the tide level was 4.4 m.
Photo 5 looking W along the E tunnel to the T junction. Light from the S entrance can be seen. Note the high tide barnacle line in relation to the ceiling height at the W end. This photo was taken on 1 May 19.
Photo 6 looking S out the S entrance from the T junction. Taken 30 August 18.

This entry was last updated: 2022-07-15 17:46:35

Errors or omissions in this information? Submit corrections/additions/comments for this entry to the registrars.

NGR:	NO 88179 83185
WGS84:	56.93979, -2.19590
Length:	90 m
Vert. Range:	12 m
Altitude:	-11 m
Geology:	Dunnottar Conglomerate with Tremuda basalt above
Tags:	Cave, SeaCave
Registry:	main

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