Countless recreational opportunities, an overwhelming array of wildlife and rich Western history attract tourists to Northwest Colorado. Spacious parks and green spaces, including Rifle Gap State Park and nearby Harvey Gap State Park, supply a variety of scenic settings and facilitate outdoor activities that range from hiking and mountain biking to fishing and boating. The northwest portion of White River National Forest, a popular destination for hiking, camping and picnicking, also attracts outdoor enthusiasts to the region, as does Sunlight Mountain Resort. A fascinating feature of Northwest Colorado is the stretch of Interstate-70 that travels through Glenwood Canyon, which has been touted as one of the most scenic drives in America, presenting travelers with awe-inspiring views and a series of impressive bridges and tunnels. Glenwood Caverns Adventure Park, a family attraction just outside of Glenwood Springs, is open year-round for cave tours that reveal displays of stalactites and stalagmites.