This adventure has a variety of interesting features such as the wide open McClellan Meadows, lava tube caves right off of the trail, and a waterfall near the end. The route itself follows excellent, smooth trails under dense forest with minimal underbrush. The trail reaches the lava caves at 8.5 miles. The caves have a much higher ceiling than most lava tubes - standing up is definitely not a problem. Bring a strong headlamp for optimal exploration. The trail continues a gradual descent, occasionally popping out into clear-cuts before paralleling Falls Creek past the waterfall. The last 2 miles are a little steeper than the rest as the trail descends over several switchbacks. A NW Forest Pass is required to park at the trailhead. Leave a car at the lower trailhead or be prepared to ride back to the upper one on a paved forest road.