It is a volcanic island , including Mount Tambora ( 8 ° 14 ' 41 '' S , 117 ° 59 ' 35 '' E ) which exploded in April 1815 , the most destructive volcanic eruption in modern history ( roughly four times larger than the 1883 eruption of Krakatoa , between Java and Sumatra , in terms of volume of magma ejected ) .
It is a volcanic island , including Mount Tambora ( 8 ° 14 ' 41 '' S , 117 ° 59 ' 35 '' E ) which exploded in 1815 , the most destructive volcanic eruption in modern history ( roughly four times larger than the 1883 eruption of Krakatoa , between Java and Sumatra , in terms of volume of magma ejected ) .