Walls of Zarahemla are the city walls upon which Samuel the Lamanite preached after the people would not allow him to enter Zarahemla. Samuel “went and got upon the wall thereof” and prophesied aloud the words placed in his heart by the Lord (Helaman 13:2-4).
Samuel spoke “upon the walls of the city” as people heard him. Those who rejected his words cast stones and shot arrows at him as he stood on the wall, but could not hit him (Helaman 16:1-7).
When people went to seize Samuel, he “did cast himself down from the wall” and fled from their lands to his own country (Helaman 16:1-7).