Along for the ride

Effie, 8 year old explorer/ memory like an elephant, got it into her head (and there's no getting it out) to go hunting for clay all of a sudden. Clay? She seemed to remember seeing - from many, many months ago - a "wall" of clay, down the trail and near the bridge. "Pshaw", we told her (well, not exactly that exact word... and not "gfaw" either). Though admittedly (and foolishly) skeptical, I followed... and lo and behold: