The ruin formerly called Willow House, but now known as Oak Tree House,
lies on the north side of Fewkes Canyon, in a symmetrical cave and has an
upper and a lower part. The two noteworthy features of Oak Tree House are
the kivas and the remnant of the wall of a circular room made of sticks
plastered with adobe but destitute of stone masonry.
Oak Tree House has seven kivas and may be called a large cliff dwelling.
One of the kivas has a semicircular ground plan with a rectangular room
on the straight side. There are no pilasters or banquettes in this kiva.
The floor of another kiva was almost wholly occupied by a series of
grinding bins, indicating a secondary use. The repair work on Oak Tree
House has not yet been completed, but a small collection of specimens at
one end of the ruin shows the nature of the objects thus far found.