Two fogbows

Fogbows are rainbows’ cousins – made by much the same process – but with the small water droplets inside a fog instead of larger raindrops. Look for fogbows in a thin fog when the sun is bright. You might see one when the sun breaks through a fog.

White arch against a dark blue sky.

Allen Carr captured this fogbow over Yellowstone Park’s White Dome Geyser on September 12, 2019..

White arch against blue background.

Fogbow and Orion, early on the morning of September 13, 2019, by Photography of the Eternal Nomad.

Source:
https://earthsky.org/todays-image/fogbows-sept2019-photos