Photo Challenge: Lines, by Man and by Nature

When I took this picture of the forward passenger deck of the Washington State Ferry Puyallup, the lines just drew me in.  Curved lines, straight lines, against the horizon line in the distance.

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And then there are the lines created in the sky by Nature-clouds which you would normally think of as curved line up in ranks above you.

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https://dailypost.wordpress.com/photo-challenges/lines-2018/