The art of Michael Heizer and Robert Smithson seeks to challenge the conventions of the art world by exposing art to a larger scale than a traditional art institution can grasp. Their land artwork held the importance of the landscape, and sought inspiration from industrial scale of civil engineering projects. Heizer and Smithson were frequent travelers throughout the southwest and their inspirations can be seen in the industrial lanscapes of the region. Their projects sought to take some of these industrial scale projects and remove them from the context of functionality, allowing the art to purely express the powerful connection between the forces of nature on the man made object. These photographs seek to document some of the industrial forms that may have been a source used by heizer and smithson in forming their artwork. These sources, now mostly abandoned, can themselves be seen as artworks. .