Iron and manganese seepage creates streaks on a
sandstone wall on Lake Powell in Utah, July 1967.
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LOL! I initially read the word seepage as “see·page”. Only after did I look it up that I realized it’s “seep·age” — as in: the wall was seeping out iron and manganese. Now it makes more sense.
Darn it, I was so excited to learn a new word. :p
Photograph by Walter Meayers Edwards, National Geographic