Become an exceeding stronghold

1. Alma 53: 5
     5 And this city became an exceeding stronghold ever after; and in this city they did guard the prisoners of the Lamanites; yea, even within a wall which they had caused them to build with their own hands. Now Moroni was compelled to cause the Lamanites to labor, because it was easy to guard them while at their labor; and he desired all his forces when he should make an attack upon the Lamanites.
2. Alma 55: 33
     33 And now it came to pass that it was expedient for Moroni to make preparations to attack the city Morianton; for behold, the Lamanites had, by their labors, fortified the city Morianton until it had become an exceeding stronghold.