Have you even seen an oak tree blown over? There is no "root ball." The roots spread out parallel with the ground about a foot or less under the surface.

Police clearing out a homeless camp in a public park on the banks of the Willamette River discovered people had BURROWED tunnels into the river bank and dug out a cavern under the oak tree with the roots as their "roof."

CIty of Albany, Oregon, officials had to rip out the trees to clear out the caverns and fill them in!

Miles Davies