Mindanao is the second largest and easternmost island in the Philippines. It is also one of the three island groups in the country, along with Luzon and Visayas.
Mindanao is the second largest island in the country at 94,630 square kilometers. The island is mountainous, and is home to Mount Apo, the highest mountain in the country. Mindanao is surrounded by seas: the Sulu Sea to the west, the Philippine Sea to the east, and the Celebes Sea to the south.