Baker's Pit Nature Reserve
Cornwall, United Kingdom
Baker's Pit Nature Reserve is a nature reserve and former china clay quarry in the parish of Ludgvan, west Cornwall managed by the Cornwall Wildlife Trust (CWT). The reserve is on the moorland of Noon Diggery and is south of the Castle-an-Dinas hillfort and Roger's Tower, a folly built within the hillfort. Within the reserve is a distinctively shaped enclosure with a funnel-like entrance resembling a banjo enclosure, which is an Iron Age ritual site found mostly in Wessex and south-east England; it is the only known one in Cornwall.
NatureReserve data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).