Licancabur's lava flows were not affected by glaciation, and some have levees and ridges. Lava flows reaching Laguna Verde have been radiocarbon dated to 13,240 ± 100 BP, and 13,270 ± 100 years old lacustrine sediments have been buried by Licancabur flows. The volcano has not erupted during recorded history, but bubbling and water temperatures of have been observed in the crater lake of Licancabur, which may remain liquid due to geothermal heating.