A long, wide rainbow

This is another rainbow picture that I found. What a sight!

It’s not shaped like a bow, and it’s not circular. It’s just long and wide. In this case the cloud is not a gas, and actually consists of very small pieces of ice. The sunlight on the ice produces the rainbow.


Rainbow from above the clouds

In his comment to Quick Quiz XXV dragonlife replied with another quiz, an excellent question: what does a rainbow look like when seen from above, for example from an airplane.

I admit that I didn’t know, so I did some research and found this photo taken from an airplane above the clouds.


Maybe you can just see a circular rainbow on the clouds. This is a very unusual sight. I hope this is the right answer dragonlife!