The Heart of Toba: Batak life beside the World’s Largest Caldera Lake.

Heart of Toba. (Nigel Kayaks). Kayaking adventure on the World’s Largest Caldera Lake, exploring Batak Life and culture. This super volcano erupted 74,000 years ago, with 2.8 times the power of Yellowstone’s last eruption, or 2,800 times that of the Mount St Helens 1980 eruption. It left a hole large enough to hold the 60-mile-long Lake Toba. Headhunters and cannibals discouraged visits to this remote area of northern Sumatra, Indonesia until the mid-nineteenth century. Nowadays Batak residents grow mangoes, coffee, cacao, and rice. Fish farms cultivate carp and tilapia, while fishermen still net their catch from dugout canoes; solus.