I saw this sign when I was hiking out to see the current lava flow from Pu’u O’o to the ocean. Sure, the sign was a little vague, but I figured it must refer to the rainbow which it appeared to point to.
By golly, the sign was right. There were rainbows for the next 3 miles.
Graham's Island 
nice!
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my neighborhood!, interesting photo!
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I hope you don’t live too close to the lava flow! It was a wonderful, intense rainbow, with a weaker, second outside it.
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