Casitahua
The volcano is in the Western Cordillera of the northern Ecuadorian Andes , between Pululagua Volcano to the north and Pichincha Volcano approximately to the southwest . 
<triplet> Western Cordillera <subj> Andes <obj> mountain range <triplet> Pululagua Volcano <subj> Western Cordillera <obj> mountain range <triplet> Pichincha Volcano <subj> Western Cordillera <obj> mountain range