Tambora Volcano (IMAGE) ETH Zurich Caption Tambora on the Indonesian island of Sumbawa: the explosive eruption of this volcano 200 years ago cooled the climate and lead to a year without a summer. Credit Photo: Jialiang Gao / Wikimedia Commons CC BY-SA 3.0 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.