Images

Heavy rains from a tropical cyclone struck the islands of the Comoros in March, 2014. On the island of Anjouan in the Union of Comoros, these rains triggered landslides that displaced over 3000 people to refugee camps.

Heavy rains from a tropical cyclone struck the islands of the Comoros in March, 2014. On the island of Anjouan in the Union of Comoros, these rains triggered landslides that displaced over 3000 people to refugee camps.

Building damage inside Lushan station.

Building damage inside Lushan station.

Damage to village house. Longmenxiang.

Photo of Redoubt and vicinity taken from the gas/obs fixed-wing flight. 

The tsunami generated by the M 8.8 earthquake carried many boats onto land - in some cases hundreds of meters inland. The tsunami wave height at this location in Concepcion Harbor (Talcahuano), Chile was about 4-5 meters (12-15 feet).

Closeup shot of the same area above. The cross-cutting feature is a road cut going through the fault.

 HVO scientist measures the episode 12 lava fountain height at Mauna Ulu from Puʻu Huluhulu on Dec 30, 1969. The Mauna Ulu eruption marks its 51^st anniversary on May 24, 1969.

Tilted slabs of welded spatter blanketed by pumice and spatter erupted on October 20 and, mainly December 30, 1969. Note the contrast between the chaotic terrain in the foreground and the undisturbed bedding in tephra in background. The chaotic area formed as moving lava upended the tephra beds. Photo taken in March 1970.

Viewing platform for visitors on rim of Mauna Ulu crater. March 22, 1973. This platform, established in 1972, was open to the public until late on the night of November 4, 1973. Then rising lava level prompted closure, and lava engulfed the platform early the next morning.

Fallout on flank of Pu'u Huluhulu from inclined fountain of October 20, 1969. The high vertical fountain was briefly diverted toward Pu'u Huluhulu when a blockage developed at the vent. Observers at the viewing platform (on the left-most peak on the skyline) scrambled to escape, but after several minutes the fountain righted itself.

Lava fountain of October 20, 1969 with viewing platform on top of Pu'u Huluhulu. The viewing platform has a stone wall facing the fountain; it can be reached by a national park trail. The platform was occupied by HVO geologists during fountaining episodes, from which the height of the fountains was measured and photos and movies taken.

Dome fountain of episode 10, October 10-13, 1969. Photo taken on October 11. This dome fountain is about 20 m (65 ft) high. Symmetrical dome fountains such as this are rare.

The graben that opened on August 4, 1969, is in lower left, near the spillover.

Tallest fountain of the eruption, 540 m (1770 ft) on September 6, 1969. Photo from '?lo'i Crater. Lava flows during this fountaining episode filled 'Alae Crater.

Photo taken on September 1, 1969. The mound was broken up and later buried by lava flows.

Same area as that shown in previous photo but a day later, showing how rapidly the vent configuration can change during active spattering. August 16, 1969.

Small spattering fountain about 8 m (25 ft) high at Mauna Ulu on August 15, 1969. Episodes of high fountains occurred on August 5 and 22, but low-level activity such as this, as well as that shown in the previous three images, was almost constant between the episodes of high fountaining in 1969.

Lava falls higher than American Falls at Niagara begin to fill 'Alae Crater on August 5, 1969 following the catastrophic draining on August 4. Renewed fountaining at Mauna Ulu sent lava shown in the photo into 'Alae, starting to refill the crater. Photo taken from same location as the preceding image.

West end of 'Alae Crater, showing exhumed mezzanine, after catastrophic draining on August 4, 1969.