Today I hiked along the Rogue River trail to Natural Bridge where the entire Rogue River disappears into a lava tube then reappears 50 yards downstream. The round trip hike from my camp at Union Creek was about 6 miles.
Here is the Rogue River upstream of Natural Bridge.
This is where the river disappears into the lava tube that carries it about 50 yards downstream.
This is where the river emerges from the lava tube and continues its downstream course to the right.
A not-so-natural bridge along the Rogue River Trail that turns part of the hike into a loop.