Snapped this shot of the lichens on my picnic table Kinda cool. From what I remember, lichens are a symbiotic relationship between a fungi and bacteri, and supposedly a sign of clean air. Wikip - "a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungi sp"

i caught this late yesterday near sunset while on a short hike.
Unusual to catch the full arc of a rainbow. Lucky me. :)