An Sean Dun
An Sean Dun lies about 1.2 km south west of Glengorm Castle and is one of the best-preserved duns on Mull. Sited on the highest point of a ridge running NNE-SSE, it is protected on the east by a sheer rock face, and approaches from other directions are across rough, rocky terrain.
A circular wall, about 3 m thick and faced with large blocks, encloses an internal court approximately 9 m in diameter. The circuit of the inner face is complete and that of the outer face nearly so. The best-preserved stretches of the outer face are on the north where the wall stands to a height of 1 m. The entrance, on the ESE, has been protected by an outwork running from the cliff edge on the east side to the dun wall on the south. A 1 m wide gap in the south-west face of the inner wall may be the entrance to a recess or stair. There is also a scarcement ledge on the north-west and SSE sides.
Grid Reference NM 431 562