Wallowa Mountains

Columbia River Basalt Group

Columbia River Basalt Group map shows main regions of basalt exposure in Washington, Oregon, Idaho and Nevada, USA. (usgs.gov)

mountain range of

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Bedrock (Wikipedia) In geology, bedrock is solid rock that lies under loose material (regolith) within the crust of Earth or another terrestrial planet.

tags

mountain range

Wikidata

https://www.wikidata.org/wiki/Q751704

Wikipedia

https://en.wikipedia.org/wiki/Wallowa_Mountains