u/clovistruck

I've been working on a welsh pony that has had founder, then was not trimmed for months so developed underslung and contracted heels. Feet were at least 3" too long. Have been trying to follow the naturalhorsetrim.com method to correct the angles. Making good progress, but one side wall is "undercut?" I'm not sure how to trim to help correct it. Suggestions please. Sorry for poopy photos, but I had already put away the tools when I went back for photos.