Introduction to Colorful Beach: The volcanic ash that rose into the sky when the volcano erupted was scattered layer by layer around the rock flow in the direction of the wind like a sandstorm, including volcanic gravel, scoria, and volcanic bombs. The southern slope of Heilong Mountain is covered with black volcanic gravel. At the foot of the mountain, there are large areas of blue-gray and yellow-brown volcanic ash. The mass is very light, like foam, and is partially red, purple, white, and gray-black.