Rio Grande Pyramid

Rio Grande Pyramid is a mountain summit reaching approximately 13,800 feet in the Weminuche Wilderness of San Juan National Forest. The peak features steep slopes with exposed rock and alpine terrain typical of the San Juan Mountains.

The Wheeler Survey team completed the first recorded ascent in 1874, marking an important milestone in the exploration of Colorado's mountains. This early survey expedition contributed significantly to mapping and understanding the San Juan range.

The peak attracts climbers seeking to test themselves in remote high-altitude terrain. Visitors come to experience the challenges of alpine mountaineering and connect with one of Colorado's less-traveled summits.

Access begins at Thirty Mile Campground with a round trip trail of about 24 miles and roughly 4,500 feet of elevation gain. The terrain is rocky and demanding, requiring proper gear and mountain experience for a safe climb.

The peak contains a distinctive geological feature called The Window, a natural gap in the rocky cliffs at about 13,000 feet. This opening provides unusual views of surrounding valleys and serves as a rare stopping point at this elevation.

Location: Colorado

GPS coordinates: 37.67972,-107.39256

Latest update: December 12, 2025 08:00