Aisle 15No. 265 of 460
Splashery
Mount St. Helens
610,000 small parts. Assembled in your browser.
Empty. Now look down.

Swipe across the pack to tear it open.
Press and hold. It pulls itself together.
Let go to drop it.
It stays in its pack here. The Playground has the rest.
Earth and Maps · Built from a recipe
Mount St. Helens
Helens, a volcano in Washington State, erupted on May 18, 1980.
Play with it in the Playground
How to play
Tap to play May 18, 1980; tap again to go back to 1979.
Toy facts
- Item
- No. 265 of 460
- Shelf
- Aisle 15, Earth and Maps
- Kind
- Built from a recipe
- Small parts
- 610,000
- Sound
- Yes
- Batteries
- None
- Assembly
- It does that itself
- Licenses
- Public domain
- Price
- $0.00
Small parts are the splats in its usual build on a computer. A phone may draw fewer.
Its controls
| Control | Kind | Range | Start |
|---|---|---|---|
| Play May 18, 1980 | Tap | ||
| 1980 | Switch | Off |
About it
Mount St. Helens, a volcano in Washington State, erupted on May 18, 1980. An earthquake set off the largest landslide ever recorded: the bulging north side of the mountain slid away, a sideways blast flattened the forest for miles, and a column of ash rose about 24 kilometers into the sky. The summit was about 400 meters lower afterward, with a horseshoe-shaped crater open to the north.
This block shows the mountain before the eruption, from a U.S. Geological Survey model made from 1950s topographic maps, and today, from the 3D Elevation Program and aerial photographs, seen from the north. Tap it to watch the summit fall away while the blast races north and the ash column rises and drifts east; tap again to go back to 1979. The heights are real; the timing and the ash are shortened to a few seconds.
Details
- Splats
- Opens at 200,000 at Mid Detail, 157,410 at Low, and up to 870,000 at Max
Sources and credits
| Work | By | License |
|---|---|---|
| Digital elevation model of Mount St. Helens prior to the 1980 eruption | J. A. Bard and R. Phillips-Netherton, U.S. Geological Survey | Public domain |
| 3D Elevation Program (3DEP), The National Map | U.S. Geological Survey | Public domain |
| The National Map orthoimagery (NAIP and Landsat) | USDA Farm Service Agency, NASA and the U.S. Geological Survey | Public domain |



