Black Geo
This cache is a 15 ml screwtop container with logbook and pencil.
Care should be taken as this cache is close to the edge of a cliff. An interesting waypoint just slightly off route to Brough Ness Coastguard Station. It looks into a cave that has been eroded into the cliff with the waves swelling over the rocks below. I think it would be quite spectacular on days when there is a big swell on.