“This is a Mark Twain National Forest trail that formerly served as an old county road.
— Missouri Hiker
606A begins off Skyline Drive with a small pull-off area to park (two cars max). It follows a doubletrack gravel road through dense forest, which opens up to a glade top. The trail quickly descends down into McAdoo Creek and connects to the Brushy Ridge Trail #606. Expect uneven surfaces and washed-out areas of trail.