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,
Cabalian Volcano Cabalian Volcano Cabalian Volcano("Kabalianon: Bukid Kantayoktok)" is an active volcano located in the province of Southern Leyte (Region VIII) in the Philippines. Cabalian is classified by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) as active with solfataric activity. Radiocarbon dating on a pyroclastic flow deposit from the volcano estimated that the last eruption was in 1820 +/- 30 years. The cinder cone volcano has an elevation of with a base diameter of . The predominant rock type is andesite. Beside solfataras, other thermal features present are hot springs located on the east and west flank of the volcano. Mainit