What is an escarpment?

What is an escarpment?
Wall bounding the internal side of the ditch around a work
8 66.7%
Wall bounding the outside side of the ditch around a work
3 25%
Defensive work protecting a territory
1 8.3%
Number of Voters: 12
First Vote: Friday, 30 May 2008 21:26
Last Vote: Thursday, 03 July 2008 18:40