Large, puffy cumulus clouds fill the sky.

Massive, dense cumulus clouds fill the sky.

A large, dense cloud formation fills the sky. The cumulonimbus clouds are thick and appear to be building, suggesting the potential for stormy weather. No people or other objects are visible.

Photo ID: OminousSky_040
Photo size: 170.7 Mpixels (488 MB uncompressed) - 16000x10667 pixels (53.3x35.6 in / 135.5x90.3 cm at 300 ppi)