This is Cool!

GOt this in an e-mail:
This is a fire rainbow- the rarest of all naturally occuring atmospheric phenomena.
The picture was captured this week on the Idaho/Washington Border.
The event lasted about 1 hour.

Clouds have to be cirrus, at least 20 000 feet in the air, with just the right amount of ice crystals and the sun has to hit the clouds at precisely 58 degrees.