If built, it would have been one of the most complex and expensive Disney attractions of its time, housed in one of the largest show buildings (a large warehouse that stores the interior of the attraction) ever created by the Disney company. Its projected expense is one reason it was never built. The attraction would have also shared the show building with a "runaway" mine train themed roller coaster. Other features of the pavilion-style WRE would have included hiking trails atop the mesa, a Pueblo Indian village, and a pack mule attraction.