Global Volcanism Program | Image GVP-00653
More than three years after the end of the major eruption that began in 1982 the crater had partially been filled by a lake. The dark streaks are lahar deposits that swept into the lake as a result of remobilization of tephra deposits from the eruption. Vegetation has recovered on the steep background wall, which is the SW scarp of the 1-km-deep scar resulting from flank collapse.
Photo by Tom Casadevall, 1986 (U.S. Geological Survey).