There is a small but fantastic picnic spot at the coordinates below - it’s on the north bank of the stream, beside a small waterfall. Requires sure-footedness to walk carefully down the bank from the path.
This gorge is known as “The Thrutch” and folklore says the chapel was formed when the King of the Fairies, aiding Robert of Huntingdon to overcome a curse, turned a local coven of witches to stone.
Treacherous segment of trail, only tackle if prepared, it's wet, steep and slippery. A long way down if you misstep, leads into the valley and into the river.