Shield volcano are cave-like volcanic straights formed by the hardening of overlaying lava. These structures help further the propagation of lava, as the walls of the tube insulates the lava within. Lava tubes can account for a large portion of shield volcano activity; for example, an estimated 58% of the lava forming Kīlauea comes from lava tubes. In some shield volcano eruptions, basaltic lava pours out of a long fissure instead of a central vent, and shrouds the countryside with a long band of volcanic material in the form of a broad plateau. Plateaus of this type exist in Iceland, Washington, Oregon,
Volcano: The Blast Coaster Volcano: The Blast Coaster Volcano: The Blast Coaster (often shortened to Volcano) is a launched inverted roller coaster at Kings Dominion in Doswell, Virginia. Designed by Werner Stengel and built by Intamin, Volcano was the world's first inverted roller coaster to feature an linear induction motor (LIM) and is the only one of its kind that completes a full circuit. The roller coaster opened to the public on August 3, 1998. A portion of the ride is enclosed inside a man-made Volcano. Volcano was designed around a dormant attraction originally known as The Lost World, and later as Smurf Mountain.