Mount Pinatubo is an active volcano in Luzon strategically located in the borders of Zambales, Tarlac, and Pampanga. Its volcanic eruption in 1991 made a big impact in the Philippines' history with regards to natural calamity. I remember that earthquake was felt to some Luzon provinces and most of our Aeta people were vastly affected. Afterwhich this occurence at Mount Pinatubo created a very very beautiful crater lake booming their tourism industry.