Two acres of my land has a high water table and prior to clearing it had dense growth of dogwood and willow brush. The roots of this vegetation formed raised clumps mixed with topsoil. I want to level these clumps and started with a pick axe and shovel but concluded it would take years. I wonder if your stump grinder would work. This would require the cutting teeth to make contact with the soil. It is loam with no rocks.