By comparison, in the Timeline of volcanism on Earth when the volcano Mount Tambora erupted in 1815 - turning 1816 into the Year Without A Summer due to the levels of global dimming sulfate aerosols and ash expelled - it exploded with a force of roughly 800 to 1,000 megatons, and ejected of mostly rock/tephra, which included 120 million tonnes of sulfur dioxide as an upper estimate. A larger eruption, approximately 74,000 years ago, in Mount Toba produced of tephra, forming lake Toba, and produced an estimated of sulfur dioxide. The explosive energy of the eruption may have been as high as equivalent to 20,000,000 megatons (Mt) of TNT, while the Chicxulub impact, connected with the extinction of the dinosaurs, corresponds to at least 70,000,000 Mt of energy, which is roughly 7000 times the maximum arsenal of the US and Soviet Union.