The Kostakan cones are found south of Bakening volcano, from Kostakan Lake southward in a north-south lineament (GVP). They are associated with lava flows and maars. (Ponomareva et al. 2007). Some of these lava flows have lengths of more than (Dorendorf et al. 2000). Zmeya crater formed inside a landslide scar and is the highest cone at of altitude (GVP).