The eruption of Mount Pinatubo in 1991 was the largest volcanic eruption in 80 years. The explosion blew off the volcano's top and deposited tons of ash on the towns and villages near its base. Even more devastating than the eruption, however, were the mudflows that resulted from the accumulated ash. This video segment depicts some of the impacts of the eruption on the communities surrounding the volcano, and on the global environment as well. The segment is three minutes thirty seconds in length. A background essay and list of discussion questions supplements the video.