Fox Hole Cave, Hartington Middle Quarter - 1011922 | Historic England
Rabbit hole in farmer's field leads to 'mystery caves' - BBC News
Details of the Site Dove Holes Caves in the Dove Area
Premium Vector | Natural underground hole cave
Vertical cave safety concerns- this cave drop is surrounded by sharp rocks. Would it be possible to setup a tight static rope OVER the hole via 2 trees, and then connect another