Callanish X (or "Na Dromannan", "Druim Nan Eun") is the collapsed remains of a stone circle.

The fallen stones lie on the summit of the rocky ridge, Druim nan Eun.

The stones were examined from 2003–6 in an excavation involving the removal of the covering layer of peat.

[1] These excavations revealed that the circle had comprised a ring of seventeen stones, of which two are missing and the remaining fifteen are fallen.

[1] The stones at Callanish X had been erected on bare rock, where it was impossible to dig pits or sockets in the tough bedrock.