Lower Boscaswell is set amongst some wonderful high walls which are clearly of Iron Age origin. The remaining fragment comes from the middle of the tunnel, and is about two metre in length just at the junction of the the creep passage which, as usual, emerges on one side of a wall.
In the past the entrance was almost completely overgrown but the National Trust has cleared the foliage away leaving this impressive entrance and about 1m of tunnel - more a large foxhole.
The structure is not easy to 'read'. The circular enclosure (see plan) is impressive and might have been a courtyard or even a courtyard house although there is no evidence of the usual courtyard house 'cupboards'. The main passage of the fogou left the present entrance and stretched in a 'long wall' for about 10m towards the north west and the sea. A farmer is said to have destroyed this in the 1960s.
This fogou must have made it very much like the neighbouring Pendeen vau: a long Cornish wall above ground as the soil is too thin to be easily excavated to make a trench.
Close by are the remains of the Geevor and Levant mines where the ground is seemingly sterile following long exposure to arsenic.
The main entrance and creep entrance show up well together.
Inside, the exit to the creep can be seen on the right.
Don't miss this fogou, if only for the views towards the sea - when the mist is not down at cliff level, that is.