Aaron Huey, who was at Mountainfilm in 2007 with his photos of Sufi mystics, returns with photography about another form of religious devotion: Over the last year, he has followed folk artist Leonard Knight, who spent the last 35 years building a mountain—yes, a precipice the equivalent of three stories in height that’s called Salvation Mountain and is not far from the Salton Sea in California. Knight’s message is simple: God is love.