There are over seventy gateways in the embankment,
having a width of from ten to fifteen feet. These could
not have all been for places of ingress and egress. I
noticed, during a visit to the place in the summer of



DEFENSIVE ENCLOSURES. 23

1866, that some of them faced the precipitous ravines,
with made earth thrown out. These appeared to be
intended for outposts for sharpshooters. By some they
are regarded to have been places for block-houses or
bastions composed of timber. The walls are not
accompanied by a ditch, but within the work there are
not less than twenty-four reservoirs, which, in con-
nection with the springs, would supply Sufficient water
for any number which might there be besieged by an
invader.
At numerous points arc found large qtiabtities of
water-worn stone which, after un incredible amount of
labor, have been carried from the river below. Near
the exterior of the eastern wall of the north divisron are
two large mounds from which start off two parallel walls
that continue for a distance of thirteen hundred and
fifty feet, when they suddenly come together, enclosing
another mound at the most eastern extremity. These
walls are now, owing to the plow, almost entirely
obliterated. They are shown in the supplementary plan.
