The Trail of the Two Forests is a short loop trail that leads along an ancient lava flow that spilled down from Mount Saint Helens. You will walk through an emerald forest and discover the remains of an old forest cast in stone. There are deep holes in the ground where trees just burned instantly when they were hit by the flaming hot lava. You can also crawl through a narrow lava tube. It's a beautiful adventure if you have just few time.