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) done. "When It Rains, It Pours" received generally positive reviews from television critics. According to the Nielsen Media Research, the episode was watched by 5.688 million households during its original broadcast, and received a 2.6 rating/8 share among viewers in the 18–49 demographic. For his work in the episode, Robert Carlock won the Writers Guild of America Award for Episodic Comedy. Liz Lemon (Tina Fey) is surprised that men have been noticing her, instead of resenting or ignoring her as they usually do. Her friend Jenna Maroney (Jane Krakowski) tells Liz that she is coming off as more confident since