Surviving inner kerb stones.
These three are the only surviving stones from a circle thought to have diameter
of about 6.5m. Here we see their outer faces that would have been
buried whilst they were holding back the boulders of the cairn fill material.
Note how these outer faces are uneven and rough, the inner surfaces that
would have been visible from inside the ring-cairn's central space are much
smoother and flatter.