The Kolb brothers built their studio in 1904 and operated it at the head of Bright Angel Trail for 75 years. Everyday they would take tourist photos, run down 5 miles to Indian Gardens where there was water for developing, then run back up in time to meet the customers at the end of the ride. They expanded in 1915 and began showing a 1/2 hour movie of their 1911 101 day trip down the Colorado River. It was shown every day from 1915 to 1976 making it the longest, continuously running movie in American history. It is currently available for viewing on line. The photos are from 1904 and 1912 showing the studio which today is a gallery and bookstore.