Otmane El Rhazi from USA.gov.
From the Department of Interior:
Visitors to the Grand Canyon National Park got to see this stunning sight. This weather phenomenon is called a total cloud inversion, and it happens when the air near the ground is cooler than the air above it, creating a sea of clouds. While typically a rare event, this is the second cloud inversion at the Grand Canyon in six weeks. Photos by M. Quinn, National Park Service.
Top photo: The South Rim’s “Battleship,” which truly looked like a ship today, cutting through the waves.
Middle photo: A timelapse of the clouds rolling into the Grand Canyon from Hopi Point on the South Rim of the canyon.
Bottom photo: Visitors viewing the inversion from Hopi Point along Hermit Road on the South Rim of Grand Canyon National Park.