Yosemite National Park

Yosemite National Park

Great Basin National Park

Great Basin National Park

North Cascades National Park & Lake Ross National Recreation Area

North Cascades National Park & Lake Ross National Recreation Area

Haleakalā National Park

Haleakalā National Park

Silver Sword

Kalaupapa National Historic Park

Kalaupapa National Historic Park

Joshua Tree National Park

Joshua Tree National Park

Lassen Volcanic National Park

Lassen Volcanic National Park

Point Reyes National Seashore

Point Reyes National Seashore

Lassen Volcanic National Park

Lassen Volcanic National Park

Pearl Harbor National Monument

Pearl Harbor National Monument

Puukohola Heiau National Historic Site

Puukohola Heiau National Historic Site

Olympic National Park

Olympic National Park

Starfish in Kalaloch Area

Pinnacles National Park

Pinnacles National Park

Mount Rainier National Park

Mount Rainier National Park

San Francisco Maritime National Historical Park

San Francisco Maritime National Historical Park

Lake Mead National Recreation Area

Lake Mead National Recreation Area

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Olympic National Park

Olympic National Park

Kaloko-Honokōhau National Historical Park

Kaloko-Honokōhau National Historical Park

Pu`uhonua O Hōnaunau National Historical Park

Pu`uhonua O Hōnaunau National Historical Park

Hawaii Volcanoes National Park

Hawaii Volcanoes National Park

Redwood National Park

Redwood National Park

Devil's Postpile

Devil's Postpile

Columnar Basalt Posts