Marvel at the otherworldly landscape in Carlsbad Caverns’ Lower Cave. Photograph by Alamy/Chris Howes/Wild Places Photography.

PUT THIS ON YOUR 2021 NEW YEAR'S resolution list: Visit Carlsbad Caverns National Park. The pandemic shutdown will eventually lift, and this underground marvel delivers a certifiably trippy time. Aboveground, hiking trails, bat flights, and night skies abound.

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