This installation at California's Donum Estate by American artist Doug Aitken arranges a series of hanging wind chimes.

Sonic Mountain, Sonoma is nestled into the eucalyptus grove of the 200-acre Sonoma County property, which is known for its vineyards.
Aitken used wind chimes to construct the project so that it would respond to the movements and interactions of its immediate environment to create music.
Three circular metal frames, that differ in size, provide the base for 365 wind chimes that are arranged according to length, and hang vertically from the rounded scaffolding. When wind blows it activates the chimes, which intermittently make a sound depending on the current wind conditions.

"As an interactive artwork, Sonic Mountain explores the fluidity of time by creating a continuously evolving experience that is activated by the surrounding landscape," Aitken said. "Mimicking a wind chime, the installation responds to changes in the surrounding environment and creates patterns of sound as wind moves through it."
Photo by Doug Aitken Studio
The piece is also activated by other natural elements. Depending on the time of day or season the light and landscape are reflected onto the metallic structure to create different colours and patterns.
Visitors are welcome to walk around, in and through the installation, but encouraged not to touch and instead just "enjoy the sonic-space produced by natural elements."

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