Sierra Nevada de Lagunas Bravas

Sierra Nevada, also known as Sierra Nevada de Lagunas Bravas, is a major ignimbrite-lava dome complex which lies in both Chile and Argentina in one of the most remote parts of the Central Andes.

Activity in the complex started in Argentina and formed two stratovolcanoes. Later, 12 or more vents formed, some with craters up to 400 metres wide. Lava flows up to 7 kilometres long with flow ridges are also found. It covers a total area of 225 km2.

Source: Wikipedia