"Smokings" peaks of the Patagonian batholite

The indigenic name of the 3405 m high Fitz Roy, Chaltén, is frequently translated as "smoking mountain". The photo may explain the origin of this name. On that day, vortices downwind of the peak drew warmer humid air from below forming banner clouds at the leeward site of Fitz Roy and adjacent Aguja Val de Vois (2653 m) to the right, whereas Cerro Poincenot (left, 3002 m) is free of clouds. All these peaks are part of the South-Patagonian batholite consisting of granitic rocks and exposed by glacier erosion.