Mount St. Helens
National Volcanic Monument
Monument Headquarters
42218 N.E. Yale Bridge Rd.
Amboy, WA 98601
(360) 449-7800
TTY: (360) 891-5003
Johnston Ridge Observatory
24000 Spirit Lake Highway
P.O. Box 326
Toutle, WA 98649
(360) 274-2140
VolcanoCam Images Archive
Hall Of Fame Images
| How Big Is Mount St. Helens? |
 |
We used the same VolcanoCam image described from September 24, 2004,
and added a few reference marks to show you just how big Mount St. Helens
really is compared to some typical measurements.
The width of the opening into the crater is more than one mile wide.
The (old) lava dome you can see in the images is almost 1,000 feet high.
The erosion channel through the pumice plain in the image foreground
is several hundred feet deep. |