from Grand Tower on the Mississippi River to Battery Rock on the Ohio River (618-252-6789) This 160 mile trail extends east to west across Southern Illinois, passing through massive rock formations, glorious vistas, wetlands, prairie grass and dense woodlands. The trail is marked with wooden diamonds painted white overlaid with a blue “i,” the symbol of the trail. Your best information/guide is the River to River Trail Guide sold in bookshops, state park offices or through the above number. Terrain varies from moderate to difficult and takes at least fourteen days to hike the entire trail. Several campgrounds, and lodging facilities are close to the trail as well as small villages for supplies and food. Spring and fall weekend hikes