Birks FellUpper Wharfedale

CPC J4-3 Birks Fell Cave - Diagram Full Size

CPC J4-3 Birks Fell Cave - Diagram

CPC J4-3 Birks Fell Full Size

CPC J4-3 Birks Fell

WRPC J2004 Birks Fell - Water Tracing

WRPC J2004 Birks Fell - Water Tracing

Descent 166 Birks Fell Water Tracing

Descent 166 Birks Fell Water Tracing

WRPC NS21-1(2002) Birks Fell - Dye Testing

WRPC NS21-1(2002) Birks Fell - Dye Testing