Middle Boulder and Telephone Lakes Loop is a 6.9 mile lightly trafficked loop trail located near Callahan, CA that features a lake and is rated as moderate. The trail offers a number of activity options and is accessible from June until October. Dogs are also able to use this trail.
This short, easy loop tours varied terrain of forests and open ridges, with plenty of private lakeside camping and great views. You have to share the lovely scenery with cows. Free wilderness permit required for overnight visitors. Free campfire permits required for fires and camp stoves. Trails in the Trinity Alps are always open: however, most trailhead access roads are closed or impassable during winter.