Adel Mountain is an ancient volcanic field of heavily eroded 75-million-year-old igneous rocks about 40 miles long and 20 miles wide in Montana, USA

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Size: 6240px × 4160px
Location: Yellowstone
Photo credit: © Ronnie Chua / Alamy / Afripics
License: Royalty Free
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Keywords: adel, ancient, field, geology, historic, igneous, landscape, montana, mountain, nature, outdoor, rocks, states, trees, united, usa, volcanic