Johnston Ridge Observatory
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The Johnston Ridge Observatory (JRO) is located at the terminus of the
Spirit Lake Memorial Highway, on the Gifford Pinchot National Forest in
Southwest Washington State. This vantage point brings visitors within five miles
of the north side of the volcano and offers spectacular views of the
still-steaming lava dome, crater, pumice plain and landslide deposit.
JRO is located on Johnston Ridge which was named in honor of U.S.Geological
Survey (USGS) volcanologist David A. Johnston who was on duty at the USGS,
Coldwater II observation post during the
May 18, 1980, eruption. David Johnston was one of 57 people who lost their
lives in the eruption.
JRO is the third visitor center to be constructed by the Mount St. Helens
National Volcanic Monument and it's completion marks the end of a 12-year $100
million capital investment program. The one-story, 16,000 square-foot concrete
and glass structure is set back into the ridge and has special, non-refective
glass to blend into the surrounding blast zone terrain.
The building was constructed at a cost of $8.9 million with $1.65 million of
interpretive exhibits for a total cost of $10.5 million. Of this amount, $5
million was contributed by the State of Washington. The observatory will house
seismic, deformation, and other monitoring equipment that will be relayed to the
USGS Cascades Volcano Observatory in Vancouver for analysis.
Johnston Ridge Observatory features:
- 280-seat theater
- 10,000 square-foot exhibit hall
- terminals to access volcano info on the world wide web and video disk
- staffed information desk
- interpretive sales area
- restrooms, public phones, and administrative offices
- parking for 350 cars, 50 RV's and 20 buses
- viewing plaza
- trailhead access to the Boundary Trail #1 leading east and west
- interpretive staff will offer a variety of formal talks and guided walks.
-- Excerpts from: U.S. Forest Service,
Johnston Ridge Observatory Fact Sheet: April, 1997.
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