In the 18th century , the Dutch introduced coffee plantation on the western slopes of Mount Tambora , a volcano on the north side of Sumbawa , thus creating the Tambora coffee variant . Tambora 's colossal eruption in 1815 was one of the most powerful of all time , ejecting of ash and debris into the atmosphere . The eruption killed up to 71,000 people and triggered a period of global cooling known as the " Year Without a Summer " in 1816 . It also apparently destroyed a small culture of Papuan affinity , known to archaeologists as the " Tambora culture "
Year Without a Summer
Year Without a Summer
Sumbawa