Tregiffian Burial Chamber 
“A Neolithic or early Bronze Age chambered tomb with an entrance passage, walled and roofed with stone slabs, leading into the central chamber.…” – official site
Ease by public transport:
Unknown
“A Neolithic or early Bronze Age chambered tomb with an entrance passage, walled and roofed with stone slabs, leading into the central chamber.…” – official site
Ease by public transport:
Unknown