BILLINGS, Mont. (AP) — The Montana State University Library has added the sounds of Yellowstone National Park to its online archive of natural sounds recorded in ecosystems across the West.

The Billings Gazette reports that people can access the sounds — which include the bellows of bison, the bubbling of mud pots and freezing ice —online through the library's Acoustic Atlas.

The new recordings are the result of a project between Yellowstone National Park and the Acoustic Atlas, which was founded in 2013 and offers new ways to experience nature online.

The Acoustic Atlas website also includes a podcast that includes stories and interviews on Yellowstone.

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