1, 2: Tony Brocklebank at one of the entrances to Cueva de Regato. (photos: Harry Long)
3: Tony Brocklebank at the first entrance to Cueva de Regato.
4: Phil Goodwin in the first entrance to Cueva de Regato.
5: Tony Brocklebank at the second entrance to Cueva de Regato. (photos: Nigel Dibben)