A desert geologist will lead a half-day auto tour and hike through Canyon Sin Nombre (“Canyon Without Name”), with stops at Big Mud Cave and Diablo Dropoff on Arroyo Seco del Diablo.

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Swiss-Cheese Desert

Our Fill-in-the-Blanks State Park

Lichens that grow in the desert are one of his recent photo subjects. They’re not a life form readily associated with badlands. But Smith has found them “in the shaded areas, often unnoticed.”

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