Britain has an amazing range of caves and grottoes open to the public, many of which are so old details and dates of construction are unknown. Here, I show visits to Dewstow Hidden Grotto in Monmouthshire, the Royston Cave and Scott’s Grotto in Ware, both in Hertfordshire, Margate Grotto in Kent and Grimes Graves in Norfolk, all in glorious 3D.




