| `A`a lava flow advances down the southeast flank of Mauna Loa during the early morning on March 25; the uppermost part of the channel is about 10 m wide. This flow was fed from vents along the northeast rift zone at the 3,700-m level. At 9:10 a.m., however, new fountains appeared 7 km further east at about the 3,410-m level, and the supply of lava to this flow ceased. |