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Friday Gate Cave

August 18, 2010

District: Sherwood Forest

Parish: Portland

WGS84 L/L: 18 08 26.8, 76 22 33.9

JAD2001: 816023 E, 665693 N

JAD69: 315912 E, 165404 N

Altitude: 205m WGS84

Accuracy: +/- 5m horizontal; +/- 10m vertical


Type: Dry passage

Accessibility: Walk-in

Depth: >10m

Length: 37m

Explorers: GSD

Survey: None

JU Ref: Pg 178

JU Map: N/A

Entrance size: 3m wide, 2m high

Entrance aspect: W

Vegetation in general locale: Scrub/farm

Vegetation at entrance: Scrub

Geology: White limestone

Bedding: Poor

Jointing: Poor

Speleothems: Stals

Palaeo resources: None seen

Archaeo resources: None seen

Hydrology: Dry

Dark zone: 50%

Climate: ~23, semi-humid

Bats: <500

Bat guano: Little

Guano mining: None

Guano condition: very minor deposits of fresh/fluff

Visitation: Occasional

Speleothem damage: None

Graffiti: None seen

Trash: Some

Ownership: Private

Protection: None

Vulnerability: Medium

Friday Gate Cave
August 18, 2010
Team: RS Stewart
Notes: RS Stewart

Visited after Sherwood Forest Stream Cave. The hike from the road to the entrance is about 450m, SW, through a pasture, and then along a track on the NE side of a wet, minor valley. The main entrance faces west, and sits in a bushed-up gully. A sign, “Friday Gate Cave”, currently in poor condition, has been placed several metres away.

Friday Gate Cave Entrance Sketch There is also a second entrance a short distance to the SW, although this was not georeferenced.

A passage about 4m wide, and 5m high descends to the SE. After about 15m, a small chamber on the right leads to the second entrance, while the main passage continues. Stewart was alone in the cave, so did not push to the very end, but GSD stated the length as 37m, and he covered at least 25m, so must have been close.

The bat inventory numbers are under 500, with species undetermined, although they did not appear to be Artibeus jamaicensis, and there was no sprouting fruit on the floor.

Cave crickets, and Eleutherodactylus cundalli were noted. No roaches were seen.

The cave was dry, with no mud, although it takes water from a gully. The thick vegetation upstream of the entrance appears to be preventing siltation. Occasional clearing does take place, but it probably grows back quickly, and any mud that was in the cave is removed during heavy rains by the fairly clear water that flows in.

A harp trap will work for capture and release at the main entrance. It is about 3m wide, by 2m high, with the shape when viewed from the inside as shown in the sketch.

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