The Rainbow and God's Covenant

"I set My rainbow in the cloud,and it shall be for the sign of the covenant between Me and the Earth.....and I will remember My covenant....the waters shall never again become a flood to destroy all flesh."

Genesis Ch. 9 vv. 13, 15.

If you look closely the second rainbow is just visible above the first one in the last picture - I didn't get to my camera quite quickly enough.
The valley is Nun's Valley in Madeira.