Grand Canyon

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 360.6 Hz, 55 cents sharp of F4, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap to flood the canyon from the river up, and watch it drain. Height in the Splash tab sets how tall it stands.

The Grand Canyon in Arizona is about 1,800 meters (a mile) deep, cut by the Colorado River over the last five or six million years through layers of rock laid down over almost two billion years. This block is a 20 by 20 kilometer piece around Grand Canyon Village, the Bright Angel and Garden Creek side canyons and the river below them. Its shape comes from the U.S. Geological Survey's 3D Elevation Program, and its colors from aerial photographs; the cut sides show the canyon's rock layers in their usual order, from the cream Kaibab limestone at the rim to the dark Vishnu schist at the bottom.

Tap it and water rises from the river until the canyon is half full, leaving the buttes as islands, then drains away. The flood is imaginary, a way to read the canyon's depth. Height in the Splash tab shows it at true scale or stretched up two or three times.

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