Eileen looks across Valles Caldera from Cerro Grande summit

Cerro Grande via South Ridge Trail (Bandelier National Monument, NM)

Trip Date: April 21, 2021

2021 NEW MEXICO ADVENTURE VACATION

Cerro Grande Day Hike

Rito de los Frijoles Basin
Cerro Grande (10,199 ft)

Trip Report Summary

Region: New Mexico

Sub-Region: Jemez Mountains

Area: Bandelier National Monument 

Starting & Ending Point: Cerro Grande Trailhead on Highway 4 (Elev. 8950 feet)

Waypoints: Rito de los Frijoles Basin & Cerro Grande summit (trail hike)

Summit: Cerro Grande (trail hike via South Ridge)

Approximate Stats: 4.2 miles traveled; 1300 feet gained & lost; 1.3 hours up; 1.0 hours down.

Full Trip Report

Eileen and I kicked off our New Mexico vacation with a hike up Cerro Grande near Los Alamos. We figured that this 10,000-foot summit would be a good place to begin our acclimation process. In contrast to its exalted moniker, Cerro Grande is merely a rounded hill with modest prominence and whose only claim to fame is being the highest point within Bandelier National Monument. Nonetheless, it provides a fine view of Valles Caldera, an enormous crater resulting from the collapse of a “supervolcano” more than one million years ago.

Cerro Grande Trailhead Sign

From the Cerro Grande Trailhead on State Highway 4, we started hiking up the well-graded trail through open ponderosa forest. Being a popular wintertime route, this trail is marked with closely spaced yellow diamonds, each of which could be seen from 100 yards away. I couldn’t help but wish that these high-viz yellow diamonds had become the standard snow-trail marker, rather than the now-ubiquitous low-viz blue diamonds. Oh well.

Starting Up Cerro Grande Trail

We skirted the headwater basin of Rito de los Frijoles (translation: “little river of beans” or “rite of the beans”; meaning: unknown) and switch-backed up a grassy ridge. The summit cairn soon came into view.

Hiking Thru Pine Trees On Cerro Grande Trail
Approaching Summit Of Cerro Grande

Upon reaching the summit (1.3 hours + 1300 feet from TH), we gazed out at Valles Caldera to our southwest. The expansive level plain seen from this vantage actually represents only a small part of the 14-mile-wide caldera.

Eileen On Cerro Grande Summit
Valles Caldera From Cerro Grande Summit

In a short hour, we were back at the trailhead. This had been a good introduction to New Mexico hiking, and we eagerly looked forward to much more.

Eileen Hiking Down Upper Cerro Grande Trail

Route Maps

Cerro Grande Route Map

Cerro Grande Trailhead Map

Click to enlarge…