Although there are some gravel roads open to the public that enter the park, such as the Cascade River Road beginning at Marblemount, and the Thornton Lakes Road near Newhalem, most automobile traffic travels on State Route 20, which passes through the Ross Lake National Recreation Area. The visitor center at Newhalem on the North Cascades Highway is open in the summer. Some of the best views of Mount Shuksan are from the Heather Meadows Visitor Center in Mount Baker-Snoqualmie National Forest well outside of the park. All backcountry access requires a permit, and most are obtained at the Wilderness Information Center near Marblemount. Full accessibility for all is not available in the park, but the adjacent National Recreation Areas have a few trails, and all visitor centers, campgrounds and restrooms are fully accessible.