Ceilings. Ceilings are 15 feet high unless
noted otherwise.
Doors. Interior doors are made of wood reinforced with
iron bands. They have neither locks nor keyholes. It takes
a successful DC 15 Strength check to break down a door
that is barricaded shut.
Floors. Cracked and uneven flagstones conceal a dirt
floor underneath.
Light. A small amount of natural light filters through the
arrow slits around the castle. During the day, this provides
dim light in most areas. At night, all areas are dark.
Walls. Exterior walls and load-bearing interior walls
are 5 feet thick, with 3 feet of mortared fill sandwiched
between 1-foot-thick courses of hard stone blocks. Interior
walls are I-foot-thick worked stone.
Arrow slits in the castle walls are 10 feet above the
outside ground level, 4 feet above the interior floor level, 8
inches wide, and 4 feet high. A creature on one side of an
arrow slit gains three-quarters cover against attacks from
the other side