(Big) Hill warning sign indicating that a very steep slope is coming up
(Potrero Hill, San Francisco, USA)
Potrero Hill, San Francisco, USA    map
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USA, San-, Francisco, Hill, big hill, warning, sign, steep, slope, SF, United States of America, North America, city, metropolis, town, urban, Potrero Hill, photography, stock photography agency, travel photography, picture, image, buy, photo store, licensing, illustration, commercial use.
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