They rode out the night 24 miles (38 km) away at an agricultural college, feeling the earth quake as Pinatubo's summit collapsed into a 1.5-mile (2.5 km) caldera. The Aftermath ...

The June 15 eruption created a 1.5-mile-wide (2.5 km) collapse caldera (shown here on June 22, 1991) and filled valleys around Pinatubo with pyroclastic-flow deposits.

The crater lake at the Mount Pinatubo caldera in the Philippines has become a tourist attraction decades after the deadly eruption in 1991, as shown in this photo on January 26, 2019.

The Pinatubo volcano has erupted explosively, sending a towering ash plume high into the atmosphere, capturing the attention of volcanologists and local communities alike. This video provides the ...

Mt. Pinatubo's 500-year dormancy ended in early April 1991. For weeks, the volcano sent warning puffs of gas and ash into the air above the island of Luzon in the Philippines. Scientists ...

If Pinatubo sticks to its record — its prior eruption occurred about 500 years ago — we won't have much to worry about for a while, according to Richard Hoblitt, a geologist at the United ...

The 1991 eruption of Mt. Pinatubo was exceptional for the amount of particulates that reached the stratosphere. Once there, they could persist for well over a year, whereas in the troposphere they ...

Here’s how it works. Electronic tiltmeters are being installed along the rim of Pinatubo's caldera to monitor the ground's inflation (a sign that magma is reaching the surface), on June 1, 1991.

They rode out the night 24 miles (38 km) away at an agricultural college, feeling the earth quake as Pinatubo's summit collapsed into a 1.5-mile (2.5 km) caldera. The Aftermath ...