Main Page

Martin Luther King Jr. Day is an American federal holiday marking the birthday of Martin Luther King Jr. It is observed on the third Monday of January each year, which is around King's birthday, January 15. While it is a paid holiday for workers, the emphasis is not on relaxing, celebrating, or being entertained. Rather, everyone is encouraged to participate in volunteer service activities to create a better community for all.

Mount Tambora is an active stratovolcano on Sumbawa island, Indonesia. Sumbawa is flanked both to the north and south by oceanic crust, and Tambora was formed by the active subduction zones beneath it. This raised Mount Tambora as high as 4,300 m (14,000 ft), making it one of the tallest peaks in the Indonesian archipelago, and drained off a large magma chamber inside the mountain. It took centuries to refill the magma chamber; its volcanic activity reaching its peak in April 1815.