How Hot Is Lava? Admin at 12:27 pm November 21, 2013 Quite hot. Molten rock flowing from the Pu’u O’o vent of Kilauea – the most active of Hawaii’s five volcanoes – encounters an empty ravioli can, filmed by Bryan Lowry, who explains all in detail here. awesomer/videosift FacebookTwitterPinterestSponsored Link Related posts: Lasers Of Mauna Kea Can You Cry In Space? Eureka! It’s Not The Size Of Your Infinity That Counts…