But there is plenty for the less physically ambitious to do as well, including taking a walk through the Valley of the Moon near sunset (the salt rock formations can be heard popping and crackling with temperature swings), visiting flamingo-dotted salt lakes, swimming near the El Tatio geysers, or stargazing at Explora's own observatory.

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Back in Little Rock that winter, odd characters kept popping up, talking about suspicious land deals and disappearing documents.

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In the spring, tourists come from all over the world to see the natural wonders: crystalline salt popping out of the ground, sand dunes surrounded by mountains, vibrantly colored, unearthly-looking rock formations and, if there's been enough rain, blooming wildflowers.

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