The sign above says it all. But there is more information here:
http://chapelofourladyofthecrag.btck.co.uk/
Another hermit.
Oddly or perhaps not – further along, the River Nidd was the home of an almost Saint. Robert of Knaresborough (St. Robert) (c. 1160 – 24 September 1218) was a hermit who lived just further along in another cave (then known as St. Giles’ Priory). It is said that King John visited him and Trinitarian friars also venerated him.
Reflections on life in Poetry and Prose. 