Johnston Ridge Observatory Tours and Tickets

For visitors over 16, America the Beautiful Passes or other federal interagency recreation passes offer free entrance to the observatory.

It is best to leave pets at home when visiting the observatory, as they are not allowed inside the facilities or in the plaza area, and vehicles can get hot due to a lack of shade.

Be sure to fill your gas tank and bring plenty of water for the 52-mile journey from Castle Rock to the observatory.

The short Eruption Trail offers hikers interpretive signage and 360-degree views of the surrounding blast zone.

For additional context of the mountain, its history, and wildlife, stop at the Mount St. Helens Visitor Center in Castle Rock at the beginning of State Highway 504.