National parks

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Across
  1. 1. Harding Icefield and spectacular fjords near Anchorage, Alaska
  2. 6. North Dakota badlands and wildlife preserves named after a president
  3. 7. Old-growth floodplain forest in South Carolina with elevated boardwalks
  4. 8. Tallest trees on Earth and old-growth forests in northern California
  5. 9. Dramatic Colorado canyon with steep black rock walls
  6. 12. Stark landscape of spires, buttes, and rich fossil beds in South Dakota
  7. 13. Alaska’s largest national park, glaciers and mountain wilderness
  8. 14. Volcanoes, lava flows, and Kilauea eruption monitoring on the Big Island
  9. 15. Thermal springs and historic bathhouses in central Arkansas
  10. 17. First U.S. national park with geysers and diverse wildlife in Wyoming
  11. 22. Sunrise above the clouds on a 10,023-foot volcano in Maui, Hawaii
  12. 23. Giant cacti flourish in the Sonoran Desert near Tucson, Arizona
  13. 28. Mostly underwater park protecting coral reefs in Florida
  14. 31. Largest gypsum sand dunes in New Mexico
  15. 32. Towering peaks, alpine tortoises, and Continental Divide in Colorado
  16. 35. Remote Michigan island park in Lake Superior, habitat for wolves and moose
  17. 36. Brown bears fishing at Brooks Falls in Alaska
  18. 37. Deepest U.S. lake in a volcanic caldera in Oregon
  19. 38. Inland water-based park along lakes and rivers in Minnesota
  20. 44. Highest peak in Texas, Guadalupe Peak, and fossil-rich canyons
  21. 45. Majestic peaks and Going-to-the-Sun Road in Montana
  22. 47. Massive canyon carved by the Colorado River in Arizona
  23. 48. The world’s longest cave system in Kentucky
  24. 50. Home to General Sherman, the largest tree by volume on Earth in California
  25. 52. North America’s tallest peak and vast Alaskan wilderness
  26. 54. Waterpocket Fold, unusual desert geology, and orchards in Utah
  27. 55. Five islands with endemic species and marine ecosystems in California
  28. 56. Two deserts meet with iconic Joshua trees and giant boulders in California
  29. 57. Towering sandstone cliffs and canyons in Utah
  30. 58. Accessible by plane only, volcanoes, lakes, and wildlife in Alaska
  31. 59. Famous for granite cliffs and Atlantic coastline in Maine
  32. 60. Tropical beaches, coral reefs, and rainforest on U.S. Virgin Islands
  33. 61. Deep canyons and General Grant tree among giant sequoias in California
  34. 62. Rugged peaks, glaciers, and biodiversity in Washington State
Down
  1. 2. Deep canyon along New River, hiking, and scenic bridge in West Virginia
  2. 3. Urban park in St. Louis featuring the tallest monument in the Western Hemisphere
  3. 4. Largest tropical wilderness in southern Florida, home to alligators
  4. 5. Ancient bristlecone pines and Lehman Caves in Nevada
  5. 10. Lakeshore park with sand dunes along Lake Michigan in Indiana
  6. 11. Blue Ridge Mountains, Skyline Drive, and waterfalls in Virginia
  7. 16. Most visited U.S. park with Appalachian forests and wildlife
  8. 18. Diverse ecosystems including rainforest, mountain, and coastline in Washington
  9. 19. Tidewater glaciers and abundant wildlife in Alaska
  10. 20. Remote islands with coral reefs and historic Fort Jefferson in Florida
  11. 21. Famous granite cliffs, Half Dome, and waterfalls in California
  12. 24. Protects tropical rainforest and coral reefs across three South Pacific islands
  13. 25. Hottest and lowest national park, home to Badwater Basin in California and Nevada
  14. 26. Remote Arctic national park with tundra and wild rivers in Alaska
  15. 27. Ancient Puebloan cliff dwellings in Colorado
  16. 29. Green oasis along the Cuyahoga River with historic canal trails in Ohio
  17. 30. Kobuk Sand Dunes and remote Arctic wilderness in Alaska
  18. 31. Boxwork caves and prairie ecosystem with bison in South Dakota
  19. 33. Maze of canyons, mesas, and buttes carved by Colorado and Green Rivers
  20. 34. Ancient petrified wood and Painted Desert vistas in Arizona
  21. 39. Iconic stratovolcano with glaciers and alpine meadows in Washington
  22. 40. Active volcano, hydrothermal features, and hiking in California
  23. 41. Talus caves and habitat for California condors in central California
  24. 42. Desert park along the Rio Grande with Chisos Mountains in Texas
  25. 43. Subterranean limestone caves and Big Room in New Mexico
  26. 46. Scenic jagged peaks and Jackson Hole valley in Wyoming
  27. 49. Tallest sand dunes in North America along Colorado’s San Luis Valley
  28. 51. Hoodoos in natural amphitheaters on Utah’s Paunsaugunt Plateau
  29. 53. Known for over 2,000 natural sandstone arches in Utah