Pong Dued Hot Spring
Unlike other hot springs that are the hot pool type, Pong Dued is a geyser that is usually of a very high temperature and pressure. Usually, it sprints higher than the earth's surface either occasionally or all the time, but the highest spring will always occur at a steady period. A geyser originates from the accumulation of gas in hot water so that the pressure is higher than usual whereas a hot pool originates from the flows of hot water from under the ground onto the surface and becomes shallow pools. The surface temperature of a geyser is between 90-99 degrees celcius while that of the underground water is between 170-203 degrees celsius.