Oregon - Lava Cast Forest

In the Lava Cast Forest, Deschutes National Forest, outside Bend, Oregon. A young (ca. 8000 years BP) basalt flow from Newberry Volcano engulfed a forest, and many of the trunks left hollow casts. The lava would chill and harden around the tree, and then the wood would burn out to leave a mold, as here.

Another example in the Lava Cast Forest, outside Bend, Oregon. For detailed description see the adjacent photo or the album.