Can be wet and boggy,so please wear suitable footwear (boots a must) and be prepared for the weather to turn.
A "slap" is a pass. Cauldstane probably refers to the wind that can whip over the pass and when walked it feels like a very remote and quiet place.
This cairn is situated on the summit of West Cairn Hill. Its outline is largely obscured by three drystone dykes which meet on top of it. It has been heavily robbed and is now reduced to a circular grass-grown mound of stones, about 45ft in diameter and 3 1/2 ft high. An Ordnance Survey triangulation station has been erected on it. Take in the stunning views over West Lothian.