Grotto about 40 metres west of Water Meadow

The grotto, located about 40 metres west of Water Meadow, dates from around 1780 and is constructed of granite with shell decoration. It features a round narrow arch with a keystone and voussoirs, and the jambs on either side are faced with black volcanic pebbles and shells. Inside, the grotto has squared granite walls, with the rear wall displaying a rounded arch and a star pattern made of shells, although not all shells are intact. There is a pool at the floor of the grotto, fed by a spring. To the right side, a flight of eight granite steps leads up, and the grotto is built into a bank. This structure was once part of the Vicarage garden, now known as King's Acre, which is a separate property from Water Meadow. Its style is similar to the Shell Seat at Mount Edgcumbe Country Park.