A shuttle astronaut took this image
of Mount Pinatubo four months after the eruption. The
light-colored lines radiating from the summit are not
rivers of lavathey show where lahars, mudflows
of volcanic ash, flowed downhill after heavy rains.
the image and look for changes caused by the eruption.
Scroll your cursor over the image to reveal labels for
features related to the eruption.
Notice the lahars and look for a new lake in the lower
left of the image. The lake formed after volcanic debris
dammed a stream. Look for straight lines along the lahar
in the lower left. Humans built these long lines of
rocks and soil in an attempt to keep lahars from covering
farmland and towns to the south. Also, look for a short
straight line near the center of the right side of the
photograph. This line is the runway of Clark Airbase,
a former U.S. Air Force Base that was closed earlier
than had been planned after the eruption occurred.