Beginning from Trail of Two Forests Interpretive Site. Interpretive signs guide you through this lava flow from Mount St. Helens that engulfed and consumed a forest 1,900 years ago. The accessible boardwalk loop trail takes you to many examples of tree casts formed as lava flowed around trees and cooled, leaving impressions of the forest.
To protect fragile geologic features and plant life, please stay on the boardwalk.
At a Glance
Current Conditions:
2/22/2019: 2 feet of snow on the ground. Road has been plowed but remains icy, with more snow falling on it. Be prepared for winter conditions. A Washington State Sno-Park permit required for use and NOT available on-site. Trail icy and/or snowy; use caution on the boardwalk.
Closest Towns:
Cougar, WA
Restroom:
Vault Toilet (1) at trailhead
Passes:
A valid Recreation Pass is required at Trail of Two Forests Interpretive Site.
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