The Casarotto Route is a documented alpine route on Cerro Fitz Roy and is known for sustained technical difficulty. It involves a combination of glacier approach, steep mixed climbing, and exposed rock sections. Like all Fitz Roy routes, it is strongly dependent on weather and route conditions. The line is serious, committing, and exposed to objective hazards including ice, rockfall, and sudden storms. It is a classic Patagonian ascent rather than a standard mountaineering route. Detailed timing and metric figures are not consistently published in reliable sources, so they are omitted here.
Route Outline
Approach from the Río Eléctrico / Piedra del Fraile side to the Fitz Roy massif
Gain the lower glacier and climb toward the route's upper buttresses
Follow the Casarotto line through steep mixed and rock climbing terrain
Continue to the summit ridge and summit of Cerro Fitz Roy
Descend by the established descent line or retreat route used for the ascent