Musketawa Trail and Grose Park, #33 and #34. We traveled to the very NE corner of Ottawa County to visit these parks. The Musketawa Trail is a 26 mile trail/abandoned rail line that is great for running, biking and even snowmobiling in the winter. 10 miles of the trail goes through Ottawa County. Paved and 12 ft wide. Lovely! Grose Park was closed since it’s after November 1st, but it overlooks Crockery Lake, has some picnic shelters, a playground and a dock.