Summerhill Force is a waterfall found in a wooded glade near Bowness in Upper Teesdale.
The overhang behind and to the side of Summerhill Force waterfall is known as “Gibson’s Cave”.
The cave is named after William Gibson.
In the 16th century an outlaw, Gibson hid here while on the run from the constables of Barnard Castle.
William Gibson was said to have been a lovable rogue. He was supplied with food and dry clothes by friends, while he hid behind the waterfall in his secret hideaway.