The first geocaching highway in Michigan when complete this highway will take you from Lake Huron ( Fort Gratiot County Park ) Fort Gratiot, MI to Lake Michigan ( Pioneer Park ) Muskegon, MI. Where possible we will be placing ammo boxes to serve as mini travel bug rest areas along the way and to avoid a completely micro trail. We hope you have a fun time on this geocaching highway and hope that more geocaching highways can be paved in time. We will be creating a facebook page for this highway to share memories and your fun along the way and not to spoil the fun for others.