31. Clark was abandoned by American troops during the June 1991 eruption of nearby Mount Pinatubo . 32. The Philippines'21 active volcanoes include Mount Pinatubo on the main island of Luzon. 33. Washburn said he spent Tuesday night on Mount Pinatubo after his group encountered the guerrillas. 34. Pinatubo on Luzon Island in the Philippines.35. With an average depth of, Lake Pinatubo is the deepest lake in the Philippines. 36. Near Mount Pinatubo , the United States maintained two large military bases in the region. 37. The bigger VEI-6 eruptions are comparable to Mount Pinatubo 's 1991 eruption. 38. Pinatubo , only from Subic Bay, erupted and blanketed the facility in ash deep.39. Pinatubo in the Philippines, Cotopaxi in Ecuador, and Teide in the Canary Islands.40. Wing reservists pitched into to assist survivors of Mount Pinatubo eruption in Operation Fiery Vigil.
