According to an article by Patricia Rodriguez in the Fort Worth Star-Telegram, Robert Redford was interested in filming part of the movie in the Plaza del Cerro of Chimayo, New Mexico, which is argued to be the last surviving fortified Spanish plaza in North America.
In his essay, "Night of the Living Beanfield: How an Unsuccessful Cult Novel Became an Unsuccessful Cult Film in Only Fourteen Years, Eleven Nervous Breakdowns, and $20 Million," John Nichols gives an account of the film project as he saw it [REF].