The party will NOT notice that a huge iron
grate could fall from above at this point in
the corridor. The underside is even with the
tunnel ceiling 15 feet above, and is painted a
grayish brown to blend with the stone. The
trap's 2 triggers are false doors, described
as area 28 but located separately.

26a. The secret door (detectable at normal
chances) leads to a winch, which is used to
haul the grate back up. The lowered grate
cannot otherwise be raised unless 3 or
more individuals with "ogre strength" (18/00)
all work together to do so.

>> 27.