(810) 736-7100 6145 E Mt Morris Rd, Mt Morris, MI 48458 WEBSITE If you’re ready for some serious off-roading … get your O.R.V. and D.R.I.V.E. to The Mounds Off Road Vehicle Park in Genesee County. This is one of the greatest off road playgrounds you’ll find anywhere. There’s over 200 acres of hills, dunes, mud pits, trails and rock climbs …