 Despite a dangerous attempt by helicopter and rope ladder to retrieve it, the plan had to be abandoned, forcing the second unit to use a miniature at Pinewood instead.The exterior of Drax's pyramid headquarters in the Amazon rain forest near the falls was actually filmed at the Tikal Mayan ruins in Guatemala.The interior of the pyramid, however, was designed by Ken Adam at a French studio, in which he purposefully used a shiny coating to make the walls look plastic and false.