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Another AR sandbox video, showing how to build and fill up a large reservoir to simulate a dam failure, and just general messing around with virtual water. Project home page: http://idav.ucdavis.edu/~okreylos/ResDev/SARndbox This sandbox was developed by the UC Davis W.M. Keck Center for Active Visualization in the Earth Sciences (KeckCAVES, http://www.keckcaves.org), for a joint informal science education project with the UC Davis Tahoe Environmental Research Center, Lawrence Hall of Science, and ECHO Lake Aquarium.