Another view of the apple tree mound.

My reason for questioning this mound is because the rocks are small. It could be that at some point in time this spring was running enough to have deposited them there as it bends around the tree. Living on a creek I'm always amazed at how much rock has been moved around after a good rain storm. One day I was sitting on the porch swing. The creeks were running very high and fast. I could hear large rocks tumbling and rolling under the water. When the water level went down an area that we used to call "the beach" was no longer a nice flat stretch of pure sand but a strip of rocks and small pebbles. So I try to keep that in mind when looking at anything near the creek.