This artwork features
air bubbling up through a fine powder constrained between two glass
plates tilted at a 45 degree angle. The tilting creates a continually
changing landscape evocative of aerial photographs of river drainage
networks on Earth and on Mars. As air is pumped into the powder, it
carves small streams. After the initial currents of rising air have
carved channels in the powder, subsequent streams follow the paths of
least resistance, further deepening and elaborating the drainage network.