Image of Kilchoan of Poltalloch (Cairn(s)) by greywether

Side view from the NW.

A portal stone is on the left and it looks as if the capstones could have been placed on top of a two-compartment chamber at a level lower than the top of the portals.

(Canmore and Henshall describe this as a three-compartment chamber but it looks more like two to me.)