San Kamphaeng Hot Springs, Mae On District ,The Royal Initiative Project San Kamphaeng Hot Springs was originally a natural hot spring used by nearby villagers to boil vegetables and treat skin diseases. San Kamphaeng Hot Springs is a geyser characterizing by intermittent, discharge of water heated by underground rock. The temperatures rise to a point where boiling begins which force stream bubble to rise through the cracked ground. The height of the geyser depends on the temperature. San Kamphaeng Geyser’s underground temperature is 105 C which makes it higher than 10 meters.