2011
SD7572 : The subterranean world
taken 14 years ago, 4 km N of Clapham, North Yorkshire, England
This is 1 of 3 images, with title The subterranean world in this square

The subterranean world
Gaping Gill Pothole - 105 m underground... Fell Beck dropping down into the pothole... The height of waterfall is about 35 m ... it is the highest subterranean waterfall within UK dropping down into a chamber (the largest one in Britain) 35 m high, over 140 m long and over 30 m wide...It happens when raining this chamber is filled with water up to 10 m or more above the position I was taking this photograph.