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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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Alluvium, Mojave Desert
Loose boulders cover an alluvial surface in Death Valley National Park, California. (101219-4)
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kelp and seawater (vertical)
Kelp (seaweed) and sea water, Florida Gulf Coast. (101222-24)
Download Imageocean swell and waves, Florida (vertical)
Incoming tide on Florida Gulf Coast (101222-32)
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Aerial view of the Salton Sea and Imperial Valley, California.
Aerial view of the Salton Sea and Imperial Valley, California. View towards the north.
Download ImageDendrites of manganese oxide
Manganese oxide (pyrolusite) dendrites on sandstone. This is the same material as desert varnish. (091214-1)
Download ImageUS-Mexico Border.
Aerial view of the Rio Grande River, that runs down the center of this photo, marking the US-Mexico Border. Juarez, Mexico lies on the left (south) side; El Paso, Texas, on the right (north). Note the contrast in architecture from one side to the other. (100128-112)
Download ImageView over Point Loma, California.
Aerial view over Point Loma to San Diego and San Diego Bay, California. (100128-69)
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San Francisco and Marin Headlands, California.
Aerial view of San Francisco north to Marin Headlands, California. (100128-32)
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Delta in alpine lake, British Columbia.
Delta forming in alpine lake, Yoho National Park, British Columbia, Canada (090910-43)
Download ImageDebris flow fan, N Montana.
Debris flow fan, northern Montana. Note the individual debris flow lobes as well as the channel. (O90908-18)
Download ImageGlacier, Yoho NP, Canada.
Glacier and headwall, Yoho National Park, British Columbia, Canada. Note the moraine in front of the present terminus. (090910-31)
Download ImageProterozoic stromatolites, Montana
Stromatolites in Helena Formation of Proterozoic Belt Supergroup, Glacier National park, Montana (090718-97)
Download ImageWaterfall and Hanging Valley, British Columbia
Takakkaw Falls, In Yoho National Park, British Columbia, Canada, falls over more than 1200 feet of sedimentary rock. Above it is a hanging valley, stranded above the main valley from glacial erosion during the Pleistocene. (090910-103)
Download ImageProterozoic Belt Supergroup, Montana (vertical)
Brown, Green, white, and red sedimentary strata, indicating different levels of oxidation of disseminated iron in the rock. Proterozoic Spokane Formation, Glacier National Park, Montana. (090718-41)
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