Sanibel Island is off the Gulf coast of Florida, near Ft. Meyers.
Although in reality there is quite a bit of development of roads and
houses along the south shore and on the adjacent mainland, I depicted
the island in a hypothetical natural state, as it might look without
development. I couldn't resist, however, leaving in the modern causeway
bridge.
This map is a full watercolour sheet (about 20" x 30").