of this group tapers off so gradually on its south side that there is
some doubt as to its artificial nature. The face of the Cabeza hap-
pens to be directed toward the magnetic north, but does not appear
to be oriented in any special way with reference to the mounds.

This group takes its name from the fact that a small, palm-
thatched, sun shelter, jokingly referred to by our workmen as El
Ranchito, stood on the top of one of its most conspicuous mounds.
It comprises the mounds of the Lower Terrace, those of the two
promontories already described, and two mounds, J and K, which
occupy a kind of minor promontory of their own, somewhat to the
north and slightly to the east of the others. Their height is quite
variable. For example, Mounds A and B are about 6 feet high (see
map 5), Mound C is about 10 feet, while Mounds D and E are low
platforms scarcely more than a foot or a foot and a half above the
general level of the promontories. Mound F, also, is of the low plat-
form type, although higher than D and E.

In this group are included all mounds situated on the Arroyo
Flood Plain. Dominating this group is Mound A, 25 or 30 feet in
height. It has, as indicated, an approximately square base. The
twin mounds D and E, of the same shape, are perhaps 18 feet high.
Mound C, generally referred to hereafter as the Long Mound, is
impressive. It is probably 150 feet long and 18 or 20 feet high.
Mounds F, G, and H are each but a few feet high and, since their
limits are poorly defined, would hardly suggest artificial construction
at all, but Mound G was found to contain the only specimen of
architecture encountered, the Stone Platform shown in maps 9 and 10.
Mounds I and J are low, too, and Mound B is a barely distinguish-
able rise of ground.

The mounds of this group tend to be relatively large, more or less
resembling Mounds D and E of the Arroyo Group. On the top of
Mound E, one of the smallest of the group, are two round stone
columns about 5 feet long and 16 inches in diameter. Leading up
to them from the south base of the mound are two rows of unworked
granite boulders. These rows are about 10 feet apart. They sug-
gest great rustic balustrades culminating in stone columns at the
top. The columns have fallen and are partly buried. Two similar
columns lie on Mound D. (There is, also, such a column lying a

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