 However, most of the volcanoes have not been directly dated or have not been dated in sufficient detail to recognize how active they are, making the prediction of volcanic events difficult and volcanic hazards uncertain.The nearly oval-shaped Heart Peaks shield volcano is made of basalt and trachybasalt with a composite thickness up to ; pyroclastic rocks are also present.It lies just west of the much larger Level Mountain shield and southwest of the Kawdy volcanoes.