The tower is, of course, the most conspicuous as well as the most
interesting architectural feature of the ruin, being visible for a long
distance as one approaches Square Tower House. Its foundation rests on a
large boulder situated in the eastern section of the cave floor. This
tower has three walls constructed of masonry, the fourth being the
perpendicular rear wall of the cave. The masonry of the tower stands
about 35 feet above the foundation, but the foundation boulder on which
it stands increases its height over 5 feet.
On a projecting rock on the west side above the tower is the wall of a
small, inaccessible room which may have been used as a lookout or as an
eagle house.
The lowest story of the tower is entered from plaza B, and on the east
side there are three openings, situated one over another, indicating the
first, second, and third stories, but on the south side of the tower
there are only two doorways. The roof of the lowest room is practically
intact, showing good workmanship, but about half of its floor is
destroyed. The upper walls of the second-story room have the original
plaster, reddish dado below and white above. Although the third and
fourth stories are destitute of floors, they are plastered.