Lava pours down a well-developed lava channel near a series of erupting vents on the northeast rift zone of Mauna Loa Volcano. The eruption started from fissures in the volcano's summit caldera on March 25 and migrated to these vents on March 26. This lava channel fed an `a`a flow that traveled 25 km until lava broke from the channel to feed another flow on March 29. The channel width varied 20 to 50 m and extended to within 1 to 2 km of the flow front. A scientist is standing near the channel (thin white vertical line in center).