Augmenting retaining wall along fench
I just bought a house and I'm tryijng to redo my backyard. I have a fence that slopes downward and it has a retaining wall below it that is in good shape. The prior owners had gravel up to a quarter of the way up the fence towards the lowest point. I dug this up and the bottom of the fence and the bottoms of the panels are rotted. (see picture)
I'd like to build something to augment the existing retaining wall so I add soil (eventually sod) and keep that area from having more damage, though I don't plan on raising the elevation more than 1-2". What is the easiest way to fix this? My current plan is either to use flagstone from the prior landscaping or some treated 4x4s to build an additional wall slightly away from the fence to about halfway up the length of the fence where the old retaining wall kicks in.
Any thoughts would be appreciated.
Here is a link that might be useful: