St Peter's Cave
St Peter's Cave is a natural opening in the base of the limestone of Hardwick Cliff, below Bulwarks Camp and above the mean high-water mark on the River Wye in Chepstow. It is potentially the site of the earliest discovered evidence of human occupation in this part of the lower Wye Valley. It is a scheduled monument.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).