Across
- 2. This park is not part of the continental U.S. and is home to two of the most active volcanoes on earth.
- 5. This park is in Florida and 95% of it is made up of water.
- 7. This park is in California, is home to the tallest waterfall in North America, and is famous for its enormous granite formations, El Capitain and Half Dome.
- 9. This park spans across 3 states, Wyoming, Montana, and Idaho. It is home to a famous geyser called Old Faithful as well as the largest volcanic system in the USA.
- 12. This park is in Kentucky and preserves the world's longest cave system.
- 13. This park is in New Mexico and in it are more than 119 caves hidden beneath the surface that were formed when sulfuric acid dissolved limestone leaving behind caverns of all sizes.
- 15. This park is in Colorado and its Trail Ridge Road is the highest continual highway in North America.
Down
- 1. This park straddles California and Nevada and holds the record for having the highest recorded temperature in the world.
- 2. This park is in Arkansas and is the smallest national park in the U.S but its ecosystem supports 47 naturally heated springs.
- 3. This park is in Washington and in it are 3 distinct ecosystems: sub-alpine forest, wildflower meadow, and temperate rain forest.
- 4. This park is off the coast of Florida and is home to the famous Fort Jefferson.
- 6. This park is in Alaska and has a mountain with the tallest peak in North America whose name means "the great one".
- 8. This park is in California and protects the world's largest tree and many of the world's oldest trees.
- 10. This park is in Arizona and its main natural feature was created when the muddy waters of the Colorado River cut through many layers of rock to form it
- 11. This park is the only National Park site south of the Equator and consists of three islands called Ofu, Olosega, and Ta`u.
- 14. This park is in South Dakota and contains one of the world's richest fossil beds.