Piedra del Fraile is a small, rustic campground and refugio situated in the Valle del Río Eléctrico, north of Mount Fitz Roy in Argentine Patagonia.

The site sits on private property and is reached via a trail that begins at the Río Eléctrico bridge on Provincial Route 41, about 16–17 km from El Chaltén.

The name derives from the Italian missionary and mountaineer Alberto María de Agostini, who used a prominent rocky promontory here as a base camp in the 1930s, finding shelter from the fierce winds blowing off the South Patagonian Ice Cap.

The campground offers a modest number of pitches along with basic cooking shelters and washrooms.

A refugio with a wood-burning stove serves as a warm gathering point, and the site is a well-known staging area for climbers and trekkers heading toward Marconi Pass, the Ice Cap, the Pollone valley, or Piedra Negra.

The surrounding valley delivers close-up views of Fitz Roy's imposing north face.