On June 16, 1815, Mount Tambora volcano erupted in Indonesia. This eruption was one of the largest recorded eruptions in history and led to the beginning of the year 1816, which is known as the "forgotten summer." As a result of the eruption, millions of tons of ash and gases were ejected into the atmosphere, initiating a global cooling wave. The summer of 1816 was extraordinarily cold and rainy, with snowfall, frost events, and agricultural damage observed in North America and Europe. This event led to a period known as the "Year Without a Summer," during which even in the summer months, snow and frost events occurred. The global climatic effects of this event persisted for a long time, and some experts believe it may have influenced the writing of Mary Shelley's "Frankenstein" novel, as the cold and dark atmosphere of the summer months may have affected the author's imagination.