The volcano was the site of the largest eruption of the 20th century. 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. Located near Katmai volcano, the eruption produced 21 cubic kilometers (5 cubic miles) of volcanic material. Today, the 295-foot Novarupta dome is sealed with a lava plug. 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 felt and heard up to 100 miles away and the ash traveled 20 miles away. Closest to the explosion, blasts of hot gas and wind carbonized trees. #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. 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 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. On June 6, 1912, Mount Novarupta, in central Alaska, exploded into a fiery volcano. 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. Best Viewing Spots Brooks Camp About 270 miles southwest of Anchorage Novarupta is located at the edge of a broad region of uplift covering the vicinity of Trident, Martin and Mageik. The eruption caused drainage of lava from under Katmai volcano 10 km east, and created a 3 x 4 km wide caldera. The eruption ejected 12 cubic km of lava. The eruption formed an 800 m high lava dome. 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. Novarupta, Alaska, 1912: the name of the vent of the largest eruption of the 20th century. The eruption was preceded by a series of severe earth rumblings. 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. 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. Novarupta (meaning "newly erupted" in Latin) is a volcano that was formed in 1912. Over the many weeks of continued erupting over 700 feet of ash was deposited in the vicinity of the dome. Novarupta, a volcano located in Alaska, erupted on June 6, 1912, and the eruption lasted until June 9th. 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. 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. 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