Poison Oak Leaves, Last Day of Summer. Calero Hills, California. September 21, 2008. © Copyright G Dan Mitchell – all rights reserved.

Poison oak leaves on the last day of summer against a backgrouind of branches and early autumn colors – Calero Hills, California.

My last-day-of-summer morning hike at Calero Park began early and in cloudy weather – but the overcast saturated the colors on some of the early fall colors, including the leaves on this poison oak bush on a grassy hillside.

Yes, I was careful not to get too close! I shot this with a telephoto lens…

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