Ok, ive got a ravine slope that needs a retaining wall put in to extend the back yard. I haven done anything like this before with such a steep slope, and need some ideas. First of all I would like to be able to put a ledge at the top, with a firepit in the inside, so boulders are kind of out, not to metion the house has cobble stone on it. I need to brace the wall some how, but not exactly sure what to do . Any thoughts? The wall needs to be about 15 ft wide. If any of you have pics of past work, it would be greatly appreciated.