In October 1966 Foreman announced he wanted to make the film in the US, where he had not made a movie for almost fifteen years. He originally believed that he would have to make the movie in Spain where it could be done for below the line costs of $2.2 million, while a USA shoot would cost $3.2 million. However, on further research Foreman felt a US shoot would cost only 10% more than a foreign one. He was persuaded to make the movie in America to use the Grand Canyon. (The budget would come to $7 million.)