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.