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Yes, the largest active sand dune sea (erg) in North America is the Gran Desierto de Altar, which is located in northwestern Mexico.
Key Facts About Gran Desierto de Altar:
- Location: State of Sonora, Mexico (with small northern edges reaching into Arizona, USA).
- Size: Covers approximately 5,700 square kilometers (about 2,200 square miles).
- Features: It includes active, shifting sand dunes (some over 100 meters high), massive sand sheets, and the volcanic Pinacate Peaks.
Common Confusion:
- People sometimes call the Algodones Dunes (also known as the Imperial Sand Dunes in California) North America's largest active sand dune formation, because it is a massive and popular dune field in the US. However, the entire active sand sea ecosystem of the Gran Desierto de Altar in Mexico is significantly larger.
Would you like to know more about visiting the Gran Desierto de Altar or the Imperial Sand Dunes?
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It includes the only active erg (sand sea) dune region in North America. It constitutes the largest continuous wilderness area within the Sonoran Desert.
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