Climb down a ladder and through a dark, tree well. Enjoy today’s forest of fir, hemlock, and brilliant, green moss growing on the old lava. The boardwalk is accessible and kid friendly.
Trail of Two Forests, Mt St Helens Original photo- Michael Beeler The PNW Bucket List
News to me. I never heard of this. I assume lava circled a tree which was removed or rotted away.