CANAL DEMONSTRATION PROJECT
Etched into the table is an ancient Hohokam drawing of the 2000 year old canal system. Periodically water flows into the map, fills the grooves, evaporates, and then fills up again.
Standing on the raised platform, the viewer's shadow marks the hour.
Water from the trough spills over the wall onto a grid of stepping stones. The stones absorb and evaporate the water to cool the room.