What is "gravir"

Gravir , is a village on the shore of Loch Odhairn (a sea loch) in the Park district of the Isle of Lewis. Gravir is within the parish of Lochs. There is a church, a school and a voluntary fire station in the village. There is also a pier. Most of the plots of land used to be used for crofting, but this has declined in the last 50 years. The road leading to the village is the B8060, and continues on to Orinsay and Lemreway.