when you move dirt or gravels, you find stuff, i myself have found, a petrified mastodon tooth,petrified bone,teeth,wood, armored clay ball, nest of snakes in winter,thousands of $ of abandoned copper wire phone line in old ROW, lot of golf balls, what have you found?
Head stone monuments at a Catholic mother house.
Skunks. Yellowjackets.
Rocks, mud, old drain lines, nuclear waste, unexpected burial sites and plenty of UXO..