Yes, I mean, literally, walking through a tree, not through the forest. This photo was taken at Kings Canyon National Park in the southern Sierra Nevada Mountains in central California, east of Fresno. It is north of and contiguous with Sequoia National Park. This tunnel bored through a tree giant sequoia. The person at the other end of the tunnel is my son, Pete, who is about 6' tall. That should give you an idea of the size of this tunnel. . .