The volcano lies 10 kilometres (6.2 mi) north of the town of San Antonio de Los Cobres.
[1] It is part of the Central Volcanic Zone of the Andes, a belt of volcanoes spanning Peru, Bolivia, Chile and Argentina.
The basement beneath Ramadas is formed by the Puncoviscana Formation of Precambrian-Cambrian age[1] and the site of the volcano coincides with a fault.
Red garnet occurs in the form of crystals within the rhyolite; other mineral inclusions are biotite, feldspar, quartz and tourmaline.
[7] The Ramadas Volcanic Centre is known for the unusual presence of several formations of perlite-bearing rocks, including a lapilli rich one.