On April 10, 1815, Mount Tambora in eastern Indonesia became a ruthless killer. It was the deadliest volcanic eruption in human history, claiming at least 117,000 lives and, in just seconds, wiping a people off the face of the earth. But the killing didn't stop there. Today, it is widely regarded as the most violent volcanic eruption in 10,000 years (previously Hiroshima in ancient times, it was 60,000 times stronger) - and it may have been this eruption that triggered an extraordinary but little-known malignant consequence: global climate change. Frost and snowfall in June, July, and August led to crop failures in Europe and North America. People there had to struggle to survive, and thousands died of starvation. This series will focus on three main story lines: the analysis of the eruption of Mount Tambora, the exploration and excavation of the disaster site, and the scientific analysis of volcanoes and climate change. Viewers will follow volcanologists Harald Sigelson and Steven Carey on a unique and challenging excavation expedition. This is the first time to date that "Pompeii in the East" has been explored to understand why so many people died in a natural disaster. Viewers will also meet American meteorologist Michael Chenowitz, who will reveal why the volcanic eruption in Indonesia caused a large number of human deaths on the other side of the earth.