Milepost 52 on State Road 504
Cougar, WA 98616
Located at the end of State Highway 504 and 52 miles east of Castle Rock, in the heart of the blast zone, the Center's state-of-the-art interpretive displays magically portray the sequence of geologic events that transformed the landscape and opened up a new era in the the science of monitoring an active volcano and forecasting eruptions. Read amazing eyewitness accounts from eruption survivors.Take a .5 mile walk on the Eruption Trail and learn how the eruption shaped the surrounding landscape. Visitors can expect to see views of the lava dome, crater, pumice plain, and the landslide deposit.Services include a wide-screen theater presentation, interpretive exhibits, a staffed information desk and a Northwest Interpretive Association books sales area. No food service available at this site.
Hours + Fees
Map + Directions
The Johnston Ridge Observatory is located at the end of State Highway 504 and 52 miles east of Castle Rock.