Birks Fell CaveUpper Wharfedale

CPC 1970 Birks Fell Cave

CPC J4-3 Birks Fell Cave - Diagram

CPC J4-3 Birks Fell

WRPC J2004 Birks Fell - Water Tracing

Descent 166 Birks Fell Water Tracing
 Birks Fell - Dye Testing.png)
WRPC NS21-1(2002) Birks Fell - Dye Testing

BC 75 Birks Fell Cave

NC V1 The Caves of Birks Fell

EN SSSI 2002 Birks Fell - Redmire
