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,
When It Rains, It Pours (30 Rock) could have a big-time comeback on our hands." Juli Weiner of "Vanity Fair" wrote that Paul Giamatti was a delight as his "30 Rock" character. "Entertainment Weekly" contributor Annie Barrett was thrilled that the Tracy character was a contestant on "Cash Cab", noting once the game began "everything felt so right". Samantha Urban of "The Dallas Morning News" preferred "When It Rains, It Pours" to the episodes of "Community" and "The Office", which aired on NBC the same night. Brad Sanders of the "Indiana Daily Student" wrote that Giamatti played his part brilliantly, and that his involvement in the main