Pinatubo Caldera (Philippines)
The 1991 eruption cooled Earth’s temperature by one degree Fahrenheit and ejected 2.4 cubic miles of ash. Today, a turquoise crater lake fills the collapsed summit. Aeta indigenous villages have rebuilt on its flanks. Lush jungle has reclaimed ash-covered landscapes with remarkable speed. Occasional seismic rumbles remind scientists that Pinatubo remains active despite its current peaceful appearance.