(Florian Holzherr | Powder Mountain) In an undated image provided by Florian Holzherr via Powder Mountain, James Turrell’s “Ganzfield Apani” is a walk-in light installation, originally commissioned for and displayed at the 54th Venice Biennale. It will be installed in a new trailside pavilion nestled within Powder Mountain’s 156 ski runs and numerous hiking/biking trails.