ground reinforcement

[bjaeram]

Our yard in on a slope so we had do dig about 18 inches deep on one side of the pool to make it level. There is about a foot between the pool and the dirt wall that is basicly a trench. The dirt wall is starting to cave in. How can I reinforce the dirt wall to keep that from happening?

[Watermom]

We built a retaining wall to hold our dirt back.