Nelly Force is a waterfall situated on Swan River Beck, a stream between the villages of Castle Bolton and Redmire in Wensleydale.
Nelly Force is easy to reach from a public footpath crossing the fields between the two villages. The waterfall is hidden in the trees and care needs to be taken on the rather slippery bank. The foot of the waterfall is rather scrappy due to fallen branches and other detritus.
I first visited the waterfall after a spell of heavy rain. As a result there was a lot of water coming over the 8ft high drop. I imagine that in slightly calmer conditions it would be more attractive.