What is the name of the largest volcanic lake in the world?

Which of the following volcanoes is located in the Philippines? Which type of volcano is characterized by a steep conical shape? What is the name of the volcanic island in the Philippines that is home to the Mayon Volcano? Which type of rock is formed from the cooling and solidification of lava? Which of the following volcanoes is located in the Cascade Range in Oregon, USA? What is the name of the volcanic region in Italy that is home to Mount Vesuvius? Which of the following volcanoes is located in the Galapagos Islands, Ecuador? Which type of volcanic eruption is characterized by the interaction of magma and water?