Indiana Dunes National Park
Indiana Dunes National Park Location: Chesterton, INLength: 4.7 miles in lengthDifficulty: ModerateFeatures: bicycling, birdwatching, hiking, fishing, beaches, paddling, sand
Isle Royale National Park
Isle Royale National Park Location: Houghton, MILength: 571,790 acresDifficulty: ModerateFeatures: campgrounds, UNESCO biosphere reserve, lake, islets, islands Isle Royale National
Joshua Tree National Park
Joshua Tree National Park Location: San Berndardino, CALength: 794,000 acresDifficulty: ModerateFeatures: camping, hiking, climbing, birdwatching, geological features About the Joshua
Katmai National Park and Preserve
Katmai National Park and Preserve Location: King Salmon, AKLength: about 290 milesDifficulty: ModerateFeatures: brown bears, hiking, backpacking, camping, backcountry skiing, fishing, kayaking, boat tours,
Kenai Fjords National Park
Kenai Fjords National Park Location: Kenai Peninsula Borough, Alaska Length: 4.5 miles Difficulty: Difficult Features: icefield, glaciers, fjords, terrestrial mammals, marine mammals About the
Kings Canyon National Park
Kings Canyon National Park Location: Fresno, CA Length: 722 square miles Difficulty: Moderate Features: water sports, climbing, canyoneering, campground, hiking About the Kings Canyon
Lake Clark National Park and Preserve
Lake Clark National Park and Preserve Location: Port Alsworth, AK Length: 40 miles Difficulty: Moderate Features: kayaking, rafting, fishing, hiking and camping, sport hunting,
Kobuk Valley National Park
Kobuk Valley National Park Location: Kotzebue, Alaska Length: over 75 miles (121 km) Difficulty: Moderate Features: migrating animals, hiking, backpacking, boating, fishing About the Kobuk
Mammoth Cave National Park
Mammoth Cave National Park Location: Louisville, Kentucky Location: more than 400 miles Difficulty: Moderate Features: sinkholes, underground rivers, streams and springs, spelunking, hiking,