In 1831, a massive volcanic eruption cooled the Earth’s atmosphere by 1 degree Celsius and even caused the Sun to appear in varying shades of purple, green, and even blue due to excess sulfur dioxide in the atmosphere.

The climate-altering eruption came from the Zavaritskii volcano on an uninhabited island in the Pacific that once hosted a Soviet submarine base, according to a new study

Scientists Make Groundbreaking Discovery About a Volcanic Eruption That Almost Turned the Sun Blue Scientists solved the 200-year-old mystery of the location of a large volcanic eruption that exerted a massive volume of gases which blocked sunlight and made the sun look blue.

Scientists have identified the “mystery volcano” that erupted in 1831 and cooled Earth’s climate. They have linked it to an island volcano in the northwest Pacific Ocean.

The location of a giant volcanic eruption in 1831 has eluded scientists for nearly 200 years, but now they have solved the mystery.

The 1831 “mystery eruption” that caused global cooling and famines has been traced to the Zavaritskii volcano on Simushir Island in the Kuril Islands. Researchers matched ash in polar ice cores to the volcano’s deposits.

While scientists have known that the major climate event reported during this period was caused by volcanic activity, the exact identity and location of the volcano remained a mystery – until now. A new study published in the journal PNAS found the Zavaritskii volcano on the remote,

In 1831, the Earth shuddered. A massive volcano erupted with such ferocity that it dimmed the skies and cooled the planet. Crops failed, famine spread, and the Northern Hemisphere entered a climate-altered reality.