Johnston Ridge Observatory Trail

Route Description for Johnston Ridge Observatory Trail

Mount Saint Helens is simultaneously a beautiful natural feature, the subject of sobering history, and a point of speculation for the future. This active volcano infamously erupted in May 1980, killing 57 people and causing a billion dollars of damage. It was the most disastrous explosion in American history. Today, the volcano displays its massive crater, expanding lava dome, new glacier, and post-eruptive geological changes.

The Johnston Observatory is the best place to appreciate Mount Saint Helens and to see how the mountain and the surrounding land were changed by the eruption. The observatory is perched on the Johnston Ridge, and the expanse of flat land between it and Mount Saint Helens provides an unobstructed view.

This trail takes you on a short, easy route around the observatory grounds. This trail is quick, but you can explore the other side of the ridge which has more trails as well.

Beginning from the parking area, head under the road and take the path down to the ridge. You’ll walk along the ridge to your right. This very quick trail ends as far as the path goes this way, but if you go back to where the trail splits at the ridge, you can walk along the trail on the other side even further.

It’s impossible to miss the volcano in your view. Look at the crater, where within there’s an expanding lava dome and the newly formed glacier. Hikers are regularly climbing up to the crater rim.

When you’re ready, head back to the parking area.

Hiking Route Highlights

Mount Saint Helens

Mount Saint Helens is an active volcano, last erupting in May of 1980, taking 57 lives and destroying 200 homes. The volcano is 2,549 m high. Previously the summit was at 2,950 m, but it was shortened in a lateral eruption triggered by an earthquake. Hikers flock to the summit throughout the year to take in the spectacular views of the Pacific Northwest. Mount Saint Helens was originally named Lawetlat’la by the Cowlitz people.

Frequently Asked Questions

When is the Johnston Ridge Observatory open?

The observatory is open daily from mid-May through October.

Can you camp at the Johnston Observatory?

No, there is no camping at the observatory.

Will Mount Saint Helens erupt again?

Mount Saint Helens is expected to erupt again in the not-too-distant future. The eruptions are expected to be as severe as or more severe than the eruption in 1980.