English: Eilean nam Faoileag (Loch Rannoch) Eliean nam Faoileag is a crannog made entirely of stones, built on a sand bank base. The bank measures 17m in length from N to S, and 10m across, although it used to be much bigger - in the last 30 years the level of Loch Rannoch has been raised about 6 feet. The sand bank curves round from the crannog and connects to the south shore of the loch, and before the loch level rose, was about 1.2m under the surface. At some point in the past there was supposed to have been a small prison on the crannog. The present tower is said to be a facsimile of the prison.