Puyuhuapi

A chain of dominantly basaltic cinder cones erupted along two NE-SW-trending fissures at the head of Puyuhuapi fjord comprise the Volcanes de Puyuhuapi. The larger group of four cones lies on the W side of the fjord and fed lava flows that traveled SE to the sea. The second lineament formed a chain of four smaller cones between the head of the fjord and Lake Risopatrón to the N. The two fractures are related to the regional Liquiñe-Ofqui fault zone. The cinder cones are extremely well preserved, suggesting a very young age.