Subway Cave is a lava tube that was formed during volcanic events just twenty thousand years ago. It was created when lava flowed beneath a solidified crust, forming a tunnel that eventually emptied as the lava drained. The cave is about 1/3 of a mile (0.6 kilometers) long and features a large, arched ceiling.. The trailhead is located less than half a mile from the junction of Highway 89 and Highway 44 in Old Station.
The Sundial Bridge is a prominent landmark located in Redding, California. The Sundial Bridge is situated in Turtle Bay Exploration Park in Redding, Shasta County, California. It spans across the Sacramento River, connecting the north and south sides of the park.