Symbol Bridge And Big Painted Cave: Symbol Bridge Tube Trail is a 1.6 mile out and back trail located near Tulelake, CA. The trail is primarily used for hiking.
This is a great trail along a, mostly collapsed, lava tube in Lava Beds National Monument. It begins at an asphalt paved trailhead near Skull Cave. The trail itself is smooth and gravel surfaced with only a few small steps to hinder a wheel chair. The side trails that go down into Big Painted Cave and under Symbol Bridge are short, but steep and rocky. The trail parallels the lave tube with views into the collapsed sections. There are interpretive panels to read and lots of pictographs to photograph.