| Hint | National Park | % Correct |
|---|---|---|
| Has bison | Badlands | Capitol Reef | Grand Canyon | Grand Teton | Great Sand Dunes | Theodore Roosevelt | Wind Cave | Yellowstone | 100%
|
| Contains an active volcano | Crater Lake | Death Valley | Haleakala | Hawaii Volcanoes | Katmai | Lake Clark | Lassen Volcanic | Mount Rainier | Wrangell-St Elias | Yellowstone | 92%
|
| Entirely on islands | American Samoa | Channel Islands | Dry Tortugas | Haleakala | Hawaii Volcanoes | Isle Royale | Virgin Islands | 85%
|
| The name of their state/territory is in their name | American Samoa | Hawaii Volcanoes | Indiana Dunes | Virgin Islands | 85%
|
| On the Colorado Plateau | Arches | Bryce Canyon | Canyonlands | Capitol Reef | Grand Canyon | Mesa Verde | Petrified Forest | Zion | 85%
|
| With glaciers but not in Alaska | Glacier | Grand Teton | Great Basin | Kings Canyon | Mount Rainier | North Cascades | Olympic | Rocky Mountain | Sequoia | Yosemite | 85%
|
| Indented by fjords | Acadia | Glacier Bay | Katmai | Kenai Fjords | Lake Clark | Wrangell-St Elias | 77%
|
| Touches an international border | Big Bend | Glacier | Glacier Bay | Isle Royale | North Cascades | Voyageurs | Wrangell-St Elias | 77%
|
| In the Great Basin (as defined hydrologically) | Bryce Canyon | Death Valley | Great Basin | Joshua Tree | Lassen Volcanic | 77%
|
| Touches a state border | Death Valley | Gateway Arch | Great Smoky Mountains | Guadalupe Mountains | Yellowstone | 77%
|
| In the Appalachian Mountains | Great Smoky Mountains | New River Gorge | Shenandoah | 77%
|
| One of the 12 best climbing areas in the USA according to the American Mountain Guides Association | Joshua Tree | New River Gorge | Yosemite | 77%
|
| On the Pacific Crest Trail | Crater Lake | Kings Canyon | Lassen Volcanic | Mount Rainier | North Cascades | Sequoia | Yosemite | 69%
|
| Established primarily for man-made structures | Gateway Arch | Mesa Verde | 69%
|
| Borders a metro area with a population > 1 Million | Biscayne | Cuyahoga Valley | Everglades | Gateway Arch | Indiana Dunes | Saguaro | 62%
|
| Shares their exact name with a national forest | Olympic | Sequoia | 62%
|