I don't know all the details on this project but thought I'd share this project I was asked to look at. It's a total loss, everything will be have to trashed. i'm thinking the main problem is the stone retaining walls were actually just covered by stone and were probably old wood walls, not sure if the srw wall may or may not be a freestanding wall, not sure unless i tore it down. regardless this project i think is a year or two old. and it won't end well for anyone. start slow, don't see the big $$ project and leap for it without the tools or great guidance.