Formed during the largest volcanic eruption of the 20th century, Novarupta released 30 times the volume of magma of the 1980 eruption of Mount St. Helens. Located near Katmai volcano, the eruption produced 21 cubic kilometers (5 cubic miles) of volcanic material. Novarupta, Alaska, 1912: the name of the vent of the largest eruption of the 20th century. The eruption formed an 800 m high lava dome. The four-million acre park—one of Alaska’s premier wilderness destinations—has six active volcanoes, including the 6,716-foot Mount Katmai, located six miles from Novarupta. Novarupta, a volcano located in Alaska, erupted on June 6, 1912, and the eruption lasted until June 9th. Trees were smashed, all vegetation was killed and the air became thick with acidic fumes. It was so powerful that it drained magma from under another volcano, Mount Katmai, six miles east, causing the summit of Katmai to collapse to form a caldera half a mile deep. The eruption was felt and heard up to 100 miles away and the ash traveled 20 miles away. Novarupta is located at the edge of a broad region of uplift covering the vicinity of Trident, Martin and Mageik. Novarupta Volcano Located in Alaska’s Katmai National Park and Preserve, the Novarupta volcano was formed in 1912 in an eruption that was the world’s largest in the twentieth century , sending nearly 30 cubic kilometers of ash and debris into the air and producing such strong ash flow, it formed the Valley of Ten Thousand Smokes. Between 1992 – 2000, InSAR recorded uplift of this region at 5–10 mm/yr, and between 2000 – 2004 deformation continued at 4–7 mm/year. The volcano was the site of the largest eruption of the 20th century. Best Viewing Spots Brooks Camp About 270 miles southwest of Anchorage Pyroclastic flow filled the Valley of Ten Thousand Smokes, and as much as 0.3 meter (1 foot) of ash fell 161 kilometers (100 miles) away. Novarupta volcano is located in Katmai National Park. Closest to the explosion, blasts of hot gas and wind carbonized trees. Located 290 miles southwest of Anchorage, Novarupta spewed glowing pumice and ash, wiping out all wildlife in its path and devastating a 40-square-mile area that had once been lush and green. The eruption caused drainage of lava from under Katmai volcano 10 km east, and created a 3 x 4 km wide caldera. Oct. 3 , 2006: In June 1912, Novarupta—one of a chain of volcanoes on the Alaska Peninsula—erupted in what turned out to be the largest blast of the twentieth century. It is located on the Alaska Peninsula in Katmai National Park and Preserve, about 290 miles (470 km) southwest of Anchorage.Formed during the largest volcanic eruption of the 20th century, Novarupta released 30 times the volume of magma of the 1980 eruption of Mount St. Helens. The eruption was preceded by a series of severe earth rumblings. #1 Novarupta Mountain Updated: 2020-05-05 Novarupta is a volcano that was formed in 1912, located on the Alaska Peninsula in Katmai National Park and Preserve, about 290 mi southwest of Anchorage. Over the many weeks of continued erupting over 700 feet of ash was deposited in the vicinity of the dome. Today, the 295-foot Novarupta dome is sealed with a lava plug. Novarupta is a volcano, located on the Alaska Peninsula in the Katmai area, about 290 miles southwest of Anchorage.Its eruption of June 6-June 8, 1912 was ten times more powerful than the 1980 eruption of Mount St. Helens and also lead to the formation of this 841 metre (2760ft) volcano.See: 1912 Novarupta eruption. Novarupta (meaning "newly erupted" in Latin) is a volcano that was formed in 1912. The 1912 Novarupta eruption was the largest volcanic eruption in the 20th century. On June 6, 1912, Mount Novarupta, in central Alaska, exploded into a fiery volcano. 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