Figure 5-10.--Convex slope.
Figure 5-12.--(a) Valley; (b) Draw.
terrain at the bottom. However, a unit attacking up
a concave slope would have no cover or conceal-
ment from observers or weapons at or near the top;
also, farther up the slope, the climb would be more
Contour lines widely spaced at the top and closely
spaced at the bottom indicate a convex slope (fig. 5-10).
An observer at the top of a convex slope would have no
observation of most of the slope or of the terrain at the
bottom. But a unit attacking up a concave slope would
have a much greater degree of cover and concealment
than on a concave slope; also, the climb farther up the
slope would be easier.
In order to show the relationship of land formations
to each other and how they would be symbolized on a