Zennor Quoit is a Neolithic chambered tomb on the open moorland about a mile east of the village, dating to between 2500 and 1500 BC. It is one of the finest megalithic monuments in Cornwall: a portal dolmen with a massive granite capstone resting on upright stones, large enough to have served as a communal burial chamber. The setting, on exposed moorland with views in every direction, gives it a presence that more accessible ancient monuments often lack.
The walk from the village takes about 20–25 minutes across open country — follow the track past the church and up onto the moor. There is no formal path; in wet weather the ground is boggy in places. The monument is unfenced and uninterpreted, which means you can examine it closely. A second, smaller dolmen — Sperris Quoit — sits on the same moor about half a mile to the east. The area around Zennor has one of the highest concentrations of prehistoric monuments in England, most of them unmarked.