Mélébingóy (previously known as Parker) is a low, vegetated stratovolcano overlooking Sarangani Bay near the southern tip of Mindanao Island. The steep andesitic-dacitic stratovolcano is surrounded by extensive, youthful pyroclastic-flow deposits. The summit is truncated by a 2.9-km-wide caldera with steep-sided walls that rise 200-500 m above heart-shaped Maughan Lake. This volcano was the source of a major explosive eruption in 1641 CE that was previously attributed to Awu volcano on Sangihe Island. The eruption caused darkness over the island of Mindanao, deposited voluminous pyroclastic flows and lahars, and resulted in the formation of the summit caldera. This was the last of three major explosive eruptions during the previous 3,800 years.