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Located in Arizona, the Grand Canyon is one of the most breathtaking natural wonders in the United States. Carved by the Colorado River over millions of years, its massive size and layered rock formations reveal the Earth's geological history. Visitors can hike, raft, or simply admire the views from the edge of the…

• Which wonder includes an active volcanic area beneath the surface?
• Which wonder became a symbol of hope for people arriving by sea?