In Douglas-fir/tanoak forest above South Fork Trinity River.
Very small mygal found under logs in the spruce-fir forest. No obvious sign of burrows, sheet webs, etc.
A tube of a few inches coming from the ground found in the redwoods. covered in dirt in leaves.
California Turret Spider - Antrodiaetus riversi - Lookout Ridge, Anthony Chabot Regional Park, Alameda County, California - March 2014
Brief description of what you observed
Seen in the understory of a mixed oak woodland, this structure is a well constructed spider home.