Old Faithful Rainbow
|Rainbow and Old Faithful|
The sunshine is coming from the West. The prevailing wind also comes from that direction. This spreads the water into the air on the east side of the geyser. In order to see this in the best light, I would recommend being on the south west or directly south of the geyser itself. The effect is short lived. You may see it for about 30-60 seconds before it disappears. Enjoy.