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Photos typically include their locations, so you can use locations as keywords too. You get more hits with shorter words, and fewer hits as you become increasingly specific with increasing numbers of keywords. It’s best to use singular rather than plural (eg “volcano” instead of “volcanoes”).

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Basaltic dike intruding lahars, Oregon (vertical)

Basaltic dike cutting volcaniclastic rock, eastern Oregon. Note the baked and altered edge of the country rock as well as the chilled margin along the edge of the dike. The dike fed the basalt flows (Owyhee Basalt) in the background. Rock hammer for scale. (191208-71) igneous, intrusive

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