A volcanic plain is a flat or gently rolling area formed by the accumulation of lava flows from volcanic eruptions. These plains are typically created by shield volcanoes, which produce low-viscosity lava that spreads over large distances. As a result, volcanic plains can cover extensive areas and are often characterized by their smooth, featureless terrain. These landscapes can be found in various regions around the world, such as the Columbia River Basalt Group in the United States and the Deccan Traps in India. Volcanic plains can also support unique ecosystems, as the nutrient-rich soil created by volcanic activity can promote diverse plant and animal life.