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Aniakchak Caldera in Aniakchak National Monument & Preserve

An arial panorama view of snow-covered Aniakchak Caldera in Aniakchak National Monument & Preserve in Alaska
USGS - Roy Wood
Thursday, May 28, 2020

Once a 7,000 ft tall volcano, a "massive eruption 3,500 years ago" formed this 6-mile-wide, 2,300 ft deep caldera in this national monument & preserve in Alaska.

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The Essential RVing Guide

The Essential RVing Guide to the National Parks

The National Parks RVing Guide, aka the Essential RVing Guide To The National Parks, is the definitive guide for RVers seeking information on campgrounds in the National Park System where they can park their rigs. It's available for free for both iPhones and Android models.

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