Bus-Obo
Bus-Obo is a high cinder cone in Mongolia. The high cone is formed by basaltic rocks. It may be of Pleistocene or Holocene age. It is located within a Caledonian orogenic belt in Mongolia, in the Middle Gobi area. A low velocity zone in the mantle is associated with Bus-Obo. Other Pliocene to Pleistocene age lava flows and craters are found within the adjacent Orchon valley, their relationship to this cone is unknown.