Compositition Number 506- Hallforest Castle

Pass this ruin several days each month.
RCHAMS decribe it as
"Hallforest Castle, early 14th century. A Keith strength (the Earls Marischal), originally six floors, with walls 7ft thick, the
bulk of the tower is taken up by two great barrel vaults, both subdivided by timber floorings to create, in turn, a cellar with
kitchen above and a hall with solar above. All windows, such as they are, are on the south side and there is no evidence of internal wall stairs, so timber ladders and hatches must have been required. (Access taken to second floor.) A remarkable survival of the convergence of medieval military and domestic thinking. One of the earliest towers in Scotland."
Wonder what they mean ............