The first of Robert Smithson’s major earthworks conceived to exist exclusively outdoors, Asphalt Rundown (1969) demonstrates what Smithson called the “crystalline structure of time.” He argued that time does not pass so much as it builds upon itself. In October 1969, Smithson poured a truckload of hot asphalt down a steep embankment in a quarry outside Rome. As the asphalt flowed downhill, it cooled and hardened. The resulting sculpture can be seen as time frozen mid-flow, or as yet another sedimentary layer in the infinite accumulation of time.







