The Powerline Trail heads south off of Saddle Road around the 22 mile marker. This trail used to be, as the name suggests, where power lines ran, but only the stumps of poles remain. It’s a very straight trail, which used to run all the way to Kilauea until lava flows disrupted it.
This trail is about 3.5 miles long to the point where it meets the Pu’u O’o trail. The southern part of the trail is dotted with kipukas and is shady and alive with birds. However, the northern two miles or so are exposed as the photo shows. The main feature of interest in this stretch is the Emesine Lava Tube about which, more tomorrow.
For more information about this, and other hikes on the Big Island, go to bigislandhikes.com.