A 'Caution' sign on the side of a road at the J.N. (Ding) Darling National Wildlife Refuge on Sanibel Island, Florida USA - July 25, 2012
A 'Caution' sign on the side of a road at the J.N. (Ding) Darling National Wildlife Refuge on Sanibel Island, Florida USA - July 25, 2012