- "Building the set at Yuma was an enormous project... Over Thanksgiving holiday when we first erected the fence around the set, there was a reported crowd of 35,000 dune buggy enthusiasts there. We needed to camouflage ourselves from the public and to schedule our shooting to avoid stray dune buggies creeping into a shot in the distance. This wasn't easy because on weekends the buggies covered the surrounding hills like ants."
- ―Howard Kazanjian
Instead of returning to Tunisia, the filmmakers decided to stay closer to home and go to the sand dunes around Yuma for making Star Wars: Episode VI Return of the Jedi. Buttercup Valley, California was the filming site for the Great Pit of Carkoon sequence on the Dune Sea. Filming took place in April 1982, though construction had taken place over the previous five months. The crew stayed in the nearest town, Yuma, Arizona, while filming, logging over 5,500 man-days in hotel rooms for set construction and filming.
- "Not that it was easy work. On a good day in Yuma the temperature would be 120 degrees. That was bad for us but for, say, the Gamorrean guards in their suits, it was like running a marathon every 24 hours."
- ―Richard Marquand
For A New Hope's Special Edition, the crew returned to the Imperial Sand Dunes to film additional shots of stormtroopers searching for traces of R2-D2 crash landing his escape pod. Later they edited these with the original shots filmed in the Grand Dune in Tunisia.
- Colorado Desert on Wikipedia