Login with Facebook
Twin Sisters

Select Area...
North Twin Sister 

Twin Sisters  

Photos:  Recent | Best | Popular
Page Views: 1,327
Administrators: grk10vq, Kristine Hoffman (sitewide)
Submitted By: Matt Schroer on Mar 20, 2013
Tue Wed Thu Fri Sat
Partly Cloudy
68° | 29°
45° | 24°
Partly Cloudy
43° | 25°
51° | 30°
Partly Cloudy
54° | 32°
You & This Area
Best routes for YOU in this area
Your opinion of this PAGE:    [1 person likes this page.]
Know the location? Show us! We need it for cool new features!
Twin Sisters in late afternoon. June 2011.

Currently closed to all climbing (as of 2013) MORE INFO >>>


The Twin Sisters are without a doubt the most spectacular formations found within the City of Rocks National Reserve, and they deserve mention, as the history here is abundant, both culturally and within the climbing community. Unfortunately for climbers, all climbing activities on the sisters have been banned since 2000, when a court decision decided to uphold the NPS's closure under the reserve's comprehensive management plan.

The Twin Sisters are two dramatic granite spires that mark the high points of a mile-long rock ridge that is separated from the rest of the reserve by about 2 miles. The north spire (~500 feet tall) is composed of the 28 million year old Almo Pluton granite, while the south spire (~600 feet tall) is comprised of the 2.5 billion year old Green Creek Complex granite and represents some of the oldest exposed rock on the continent.

The cultural history of the Twin Sisters is rich. Between 1843 and 1882, nearly 250,000 immigrants traveled through City of Rocks on the California Trail, using the Twin Sisters as a major landmark on their journey. Prior to receiving their current name in 1848, immigrant journals mentioned the formations under various names, including "Steeple Rocks", "Twin Mounds", "Twin Buttes", "Two Dome Mountain", and others. Inconclusive ethnographic information also hints at the formations being of important spiritual value to the area's Native American groups.

The earliest known climbing ascents on the Twin Sisters were completed in the 1960's by the renowned and visionary Lowe party, which included Greg, Jeff, and George Lowe. The Twin Sisters house some of the longest and highest quality rock in the City of Rocks, ranging from historical, Yosemite-esque crack lines to highly technical face routes. I invite others with more (personal) knowledge of these routes to add them here 1) for future reference, in case the climbing ban is ever lifted and 2) for posterity's sake, as I, for one, enjoy following the early history of North American climbing.

Getting There 

The Twin Sisters are impossible to miss and are visible from many vantage points within the reserve. From the main City of Rocks dirt road, take the westward dirt road at the split that occurs just north of Register Rock.

Climbing Season

Weather station 14.6 miles from here

4 Total Routes

['4 Stars',1],['3 Stars',2],['2 Stars',1],['1 Star',0],['Bomb',0]

Featured Route For Twin Sisters

Straight Edge 5.11a 6c 22 VII+ 22 E3 5c ID : City of Rocks : ... : North Twin Sister
Note: This description is for the historical record only. All information contained within is likely outdated and inaccurate. Many, if not all, bolts have been removed from the Twin Sisters formations and climbing on them is illegal. Do not attempt to climb these routes for your own safety and compliance with the law!Excellent face climbing up increasingly bulletproof rock characterizes this lead-bolted test piece. This route began below a very high, very rusty first bolt. Three well-spac...[more]   Browse More Classics in ID

Photos of Twin Sisters Slideshow Add Photo
The Twin Sisters. South Twin Sister is on the left...
The Twin Sisters. South Twin Sister is on the left...
Twin Sisters from the north.
Twin Sisters from the north.

Comments on Twin Sisters Add Comment
Show which comments
- none yet -
Beyond the Guidebook:
The Definitive Climbing Resource
Inspiration & Motivation
to Fuel Your Run
Next Generation Mountain
Bike Trail Maps
Backcountry, Sidecountry
and Secret Stashes
Better Data. Better Tools.
Better Hikes!