Staying at OSP? Take a Hike and find this hidden treasure! May 18, 2017May 25, 2017 friendsofonawaystatepark Staying at Onaway State Park? Take a hike and find this hidden treasure. The view is amazing and worth the hike. Be careful as the trail may get rocking depending on which route you take!! Advertisements Related Published by friendsofonawaystatepark View all posts by friendsofonawaystatepark