This low circular mound was located on the south bank of Cypress Creek
about 150 feet east of Mound A (Fig. 1). It was perched at the very edge
of the floodplain overlooking the creek channel. In recent years the
channel had been migrating laterally and had begun to encroach on the
north edge of the mound. The average diameter of Mound D at the base was
about 60 feet, and its highest point was at a relative elevation of
100.6 feet, or about 2.5 feet above the surface of the surrounding
floodplain (Fig. 9). A shallow depression about 12 feet across in the
top of the mound marked the location of the usual pothole. This pothole
had originally been only 5 to 6 feet in diameter, but had been
considerably enlarged at the surface of the mound by recent erosion.
Excavation of Mound D was begun shortly before the end of the 1958 field
season. It was dug, like the other mounds, by the quadrant method; but,
because there was not enough time for thorough excavation, only the
southwest quadrant was carried down to the sub-mound level in 1958. The
other three quadrants were taken down to the 98-foot level, however,
where a circular zone of dark, organically stained soil, 19.8 feet in
diameter, clearly outlined the location of a house structure (House No.
4) similar to those at Mounds B and C. During the final work at Harroun
in February, 1959, the entire northwest quadrant was exposed, excavated,
and recorded. Only the peripheral ring of post molds was exposed in the
other two quadrants.
The southwest quadrant of the mound was excavated in 0.5-foot levels;
all other portions were taken down in 1.0-foot levels. Horizontal plans
were recorded at all levels and photographs were taken. Vertical walls
1.5 feet thick were preserved across the mound along the W100 and N100
lines (Fig. 9), and trenches three feet wide were extended north, south,
and west of the mound in order to obtain complete vertical profiles.
Excavation and recording methods were generally the same as previously
described for the other mounds.
[Illustration: Fig. 9
HARROUN SITE:
41 UR 10
MOUND D AREA
CYPRESS CREEK]