Tambora (Indonesia)
In 1815, Tambora produced the most powerful eruption in recorded history. It killed 70,000 people and caused the “Year Without a Summer” globally. The 4,000-foot mountain lost its top, leaving a 3,600-foot-deep crater. Today, lush vegetation has reclaimed the slopes. Small tremors occasionally remind scientists that Tambora isn’t finished. Farmers work fertile soils created by past devastation.