Why are meteorite craters most often preserved in arid climates?

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lake Lake Ann in North Cascades National Park, Washington, U.S., viewed from the park's Maple Loop Trail. The North Cascades National Park is a large wilderness area that preserves majestic mountain scenery, snowfields, glaciers, and other unique natural features.

Meteorite craters are most often preserved in arid climates primarily because these regions experience significantly lower rates of erosion compared to more humid environments.1

On Earth, geologic processes such as volcanism and plate tectonics can eliminate or severely degrade impact structures over time. However, erosion—driven largely by the hydrologic cycle—is the most dominant force in destroying these features. In arid regions, the lack of abundant water limits the erosional processes that would otherwise wear down a crater's rim or fill its basin with sediment. Consequently, craters in dry environments remain intact for much longer periods, serving as clearer records of past impact events.123