Notable US national monuments, seashores, and other protected federal lands beyond the national parks proper, matched with one defining feature each.
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- Devil's Tower, Wyoming
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Columnar jointed volcanic plug rising 1,267 feet above the surrounding plain- Hovenweep, Utah/Colorado
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Ancestral Puebloan tower ruins from the 12th century- Natural Bridges, Utah
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Three naturally formed stone arches carved by water erosion- Dinosaur, Colorado/Utah
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Jurassic-age fossil remains exposed in canyon walls- Kodachrome Basin, Utah
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Colorful pipe-like rock formations rising from red soil- Grand Staircase-Escalante, Utah
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Vast landscape of layered, colorful canyon systems and plateaus- Kasha-Katuwe Tent Rocks, New Mexico
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Cone-shaped volcanic tuff formations resembling teepees- Bandelier, New Mexico
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Ancestral Puebloan cliff dwellings and kiva ruins in narrow canyon- Petroglyph, New Mexico
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Thousands of indigenous rock carvings on dark volcanic basalt- Valley of Fires, New Mexico
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5,000-year-old lava flow field with dark volcanic rock- Organ Mountains-Desert Peaks, New Mexico
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Limestone mountain range with dramatic vertical formations- Wupatki, Arizona
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Pueblo ruins perched on red volcanic terrain- Sunset Crater, Arizona
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Cinder cone volcano formed by an eruption in 1064 CE- Walnut Canyon, Arizona
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Cliff dwellings nestled in rock alcoves along canyon walls- Montezuma Castle, Arizona
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Five-story limestone cliff dwelling built into a canyon wall
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