St Robert's Cave and Chapel of the Holy Cross
The early 13th century St Robert's Cave and Chapel of the Holy Cross, also known with variants such as St Robert's Chapel and Chapel of the Holy Rood, are located on Abbey Road beside the River Nidd in its gorge at Knaresborough. Once inhabited by Robert of Knaresborough, the cave is a rare example of a medieval hermitage cut out of the magnesian limestone river gorge with a domestic area externally and the chapel of the Holy Cross which originally housed the saint's grave. The trustees of the site are the monks of Ampleforth Abbey and in 1989 the Harrogate Museums Service carried out excavations after clearing the site.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).