Rainbow at Coxs Bay

Up and out early this morning hoping for some great sky scenes, only to find that cloud cover was pretty major, and not likely to move much. At Coxs Bay Park there was a small group of blokes training for "Sevens". Unfortunately they stopped being active while I was passing, so I headed over to the road beside the bay.

As I approached, the rainbow became more and more visible, both in the sky and its reflection in the water. (Best in large)

So, at which end of the rainbow is the pot of gold?