In the home my wife and I recently purchased, I noticed more and more dirt pouring out of one side of our retaining wall surrounding our driveway. It occurs right at the seam where the retaining wall meets the rest of the house
I'm not sure if a squirrel might be digging in there, if the rain is washing it out, or what.
Is this any cause for concern? Should I take any action to prevent / fix this? Is it indicative of any deeper problems?
If it helps, here's an image of the top of the retaining wall, looking down into the driveway