so, the raised concrete slab got poured wrong (no footer) so the dirt/gravel base underneath is loose and exposed once the forms came off. I know this was done wrong, but now my question is what to do, considering erosion is going to slowly compromise the base.

Should I work as much as possible to frame a pressure treated wood wall around the bottom?

If I build mounds around it will that help (I doubt it as I would assume the material under the slab would slowly dribble out as erosion on the mound happened….

Thoughts? Any other ideas to help fix my mistake?

here are some pics


https://drive.google.com/file/d/1-5kyHf441KpxZzo6LPCHZVYaR4D2vzD8/view?usp=sharing

https://drive.google.com/file/d/1no9rduT5vBi88ummlp5RRJ89maCN7b63/view?usp=sharing