sap, causing pressure to build from the inside. The root pressure in a maple tree is approximately 0.1MPa, one standard atmosphere, which is insufficient to cause a tree to explode. See also Frost crack Sandbox tree (Hura crepitans), also known as the "dynamite tree" Footnotes Similar text can be found in the entry for Frost in Charles Hutton's 1795 Mathematical and Philosophical Dictionary References External links YouTube video with cold weather and bursting tree bark at 43:53, Wild Russia, Episode 6, Primeval Valleys Tree Trees