Terminal Geyser is a 5.4 mile out and back trail located near Chester, CA. The trail is rated as moderate and primarily used for hiking.
The geyser was an interesting sight, but the high light was the trail and all of the wildflowers blooming in early June. Still a great hike if you're already planning on seeing boiling lake.
Geyser at the end wasn't much to see. However the hike was good. Also the boiling lake can be seen on the way to the geyser and that was very cool!