Elevation: 4,400 ft
GPS: 42.282, -104.769 Google Map · Climbing Area Map
Page Views: 33,473 total · 382/month
Shared By: Dennis Horning on Feb 3, 2012
Admins: Mike Snyder, Jake Dickerson, Taylor Spiegelberg
Getting weather forecast...

Remember the Relevant

Walking Option: Until the Nebraska irrigation season starts it is possible to walk across the North Platte River below the dam. Foot traffic only access to the river bottom is gained by passing through the park residence quarters on a paved road leaving east from Park Headquarters. Park Headquarters is on the left (west) side of Rd 317 and abuts the road closure barricade. After passing some big parked garbage hauling trucks on the left take the gravel-rocky 2-track left that switchbacks down to the river bottom and cross the river. There are some stepping stones and plenty more rocks to put at the crossing.

Now that the irrigation season has started for 2014 this approach is practical only for going to the the Switchbax Power Tower Wall of the Red and White Grotto Walls. The switchback 2-track is visible from the resulting Google Map after clicking one of the yellow waypoints shown on the small Google Map in the lower left corner of the Red and White Grotto Walls description.

Guernsey State Park is located in the north central portion of Wyoming's SE quadrant on the North Platte River. The town of Guernsey is shown in the center of the big area map to your right (SEE MAP 1). The Park is juxtaposed almost between and north of the two WY county seats (Wheatland and Torrington) having highest seasonal average of winter temp highs. The SPORT climbs begin just above 4400 feet elevation. These conditions make some south facing walls here often the warmest winter climbing areas in WY. If the day is fully sunny with no or very little wind you can expect a 20+degree F increase above the ambient temp near a south facing wall. But don't expect these walls to be very accommodating when the ambient temps are 80 degree F. Other than maybe early morning climbing, skip these south faces for climbing in the summer ( A north facing wall in summer?u?). To better access the weather than using the above weather pictures see this NOAA site.

NOAA forecast for Guernsey, WY

The hourly graph options tab in the lower right will give you valuable data on the winds and %cloud cover.

There is a HADS weather station at the dam's power station. You can get current local temps and some weather history from this site.


The geology for uplifting this region is directly tied to the tertiary age Hartville Uplift centered several miles NE of here. Visible from the Whalen canyon road a few miles NE of Guernsey is a sequence of Archean rocks. Most of the rocks in GSP are of the Paleozoic group but there is a wisp of Precambrian metadolomite near the very SE corner river bottom exit. See this USGS Guernsey Reservoir Quadrangle Map

Guernsey Reservoir Quadrangle


Hartville Uplift:


There are miles of canyon walls here and most with not to distant walking access (SEE MAP 2). But do not get your hopes too high for a lot of the rock is quite shattered and it often needs cleaning or your route will be simply not fit for climbing safely.

Safety: Safety Trumps Leaving No Trace in this Area. You will find hangers on bolts.

Camping: The map provided by GSP shows 16 campgrounds with tent sites but the same folder states that there are 7 campgrounds with 142 campsites. From October through May 14 the places are virtually empty. The camping fee is $10 per night for residents and $17/ night non residents. For residents a season camping pass is $40. If you are camping here during the off season (Oct-May15) you can use the Handy Cap concrete parking pads. The water is turned on sometime in April at the upper and lower spotted Tail campgrounds and turned off in early October.

There is one park camping rule you may need to interpret properly. It reads: Camping in designated campsites is restricted to one camping unit (tent, travel trailer or motor vehicle designed for camping) plus two licensed vehicles (car or boat RV trailer) plus a maximum of 10 people (immediate family members, kids, grandparents, etc of permit holder)may exceed this number.

Yurts, managed by GSP, are rentable year round. To rent contact GSP by phone, email, snail mail or fill out the paper work on site with a GSP employee. $50/day with $50 deposit. Allow a couple days in this transaction as they are not rentable on demand like an Interstate motel. Be sure to bring fire wood if you want to heat the place.

The BLM land northwest of the town of Guernsey offers a limited form of on demand libertarian camping[no water, no toilet, no fire grate, no table, no flat pullouts, maybe inebriated ATV riders at midnight and no charge yet] in Kelly's Park. To get there take the rough gravel and dirt road that begins on the west end of the highway 26 bridge over the North Plate River, go north along the west side of the river and pass under the railroad bridge. At the end of this road which is where the river cliff meets the river are a turn around loop and a trash barrel. The trail beginning here and going upstream will take you to the Switchbax Power Tower Wall. We suggest do not leave your tents pitched here in the daytime. Fishermen use this parking in the daytime.

There are two more options for free camping using nearby BLM lands. First: See Map 3. All of section 10 is BLM land except the SW of the SW which is GSP. It is a short walk (too use this existing 2-track for driving is not permitted) to this BLM boundary up Dead Man's Gulch past Climbing Area 3. Backpack in and camp anywhere beginning just east of the old (some places down) fence line.

Second: The adjacent land for just less than 0.4 mile in section 9 & 10 (SEE MAP 3) that is along the south edge of highway 317 and extending south after exiting the NE entrance of the park is also BLM. To use this area for camping find an old 2-track to your right just after passing through the NE exit gate (Long Canyon) in the direction of leaving the park. The 2 track ends at the beginning of a gully with a tight turn-around-space and there are signs of fire pits along its the border.

During some high fire hazard seasons no open fires are permitted even in the campground fire pits.

Barley pop, food, water and gasoline can be acquired in Guernsey during the day. The city of Guernsey in not a military village.

If you are a Viet Nam Vet or the like and are prone to adverse effects from the rattling of machine gun fire and near distant bomb explosions your peaceful sleeping at night here may be interrupted when the WY National Guard Camp just north of here releases such ordinance during week end training sessions.

Getting to Graceland for 2 cents

Take I-25 84 miles North of Cheyenne to Exit 92. Exit here and go east on highway 26 for almost 15 miles to near Guernsey, WY. Just before highway 26 crosses the North Platte River turn left on State Highway 317 (aka Lake Shore Drive) for about one mile to the paybooth ($4.00/day resident) of Guernsey State Park. You can get an annual WY parks pass at Howshar Hardware in Guernsey and save $$$ if the total of your yearly visits to the various WY state parks is more than 6 days.

You can also reach the place, even in the canyons, with Verizon.

130 Total Climbs

Route Finder - Best Climbs for YOU!

Location: Guernsey State Park Change
Type:  to 
Sort by:   then:

Classic Climbing Routes at Guernsey State Park

Mountain Project's determination of the classic, most popular, highest rated climbing routes in this area.
More Classic Climbs in Guernsey State Park »

Weather Averages

Days w Precip
Prime Climbing Season
2 questions: As of 4/15/2014 the park website doesn't say anything about road closures, so is the info at the top of this page outdated, and the road is now open? Also, for the free BLM camping that's just outside the park entrance, does anyone know if the 2-track requires a high clearance vehicle, or can a small honda get down this road far enough to camp? Thanks

Edit: As Dennis mentioned, road is still closed as of April 20, 2014 despite the official state park website not mentioning it. Honda Fit with 5 inches of clearance crammed with gear got us to all the camping and parking spots on the south side of the park, but barely! Apr 15, 2014
ryan laird
Denver, CO
ryan laird   Denver, CO
Semicolon, the road is still closed, but should be opening sometime in May 2014. Right now, you cannot cross the river downstream of the dam since they just started releasing water. So, either drive around to the North, ask to walk across the dam, drive the road up the SE side of the river, or climb at the Power Tower wall.

I'm not sure about the BLM roads on the north Apr 16, 2014
There is BLM land just east and south of the north park exit off WY 317. No BLM maintained road exists for getting to this adjacent land but there is an ad hoc 2-track that ends after 200 feet at a make-shift campsite/firepit in the trees and shrubs. The pathway seems smooth enough for a Prius but there is not a lot turning around room.

Worried about clearance? Park your car [Low Belly] adjacent to the road and walk the 200 feet? There are other potential camping sites in this zone. Sleep in your car next to the road on the BLM land and put up a sign reading "Please do not disturb, driver needs a good night's rest." If you leave enough empty beer bottles on your roof you may not need this sign! Apr 17, 2014
Just wanted to say great work by Dennis, Ryan, and others who I didn't meet in getting these routes up. A quality bunch of guys. For other new visitors: Rock quality varies among areas and routes. There are plenty of high quality routes with good rock quality, but expect loose stuff on many routes until they get more traffic and cleaning. I look forward to more trips up there. Apr 21, 2014
Boulder, CO
Jasmine   Boulder, CO
Amazing work and thought went into this area! Thanks so much to all those who put in the work and had the eye for the routes here. Super fun! May 27, 2014
Joe Falcone
Joe Falcone   Corvallis
Thanks to all that established this area. Great place to come for a mid winter climbing day. Definitely bring a helmet still some loose rock but no crowds and fun moderate routes. Looking forward to trying out more of the area. Jan 12, 2015
Carrie Lane
Laramie, WY
Carrie Lane   Laramie, WY
We were told yesterday by a park ranger that climbers and fishermen should no longer approach the Switchbax Power Tower area by walking through the park residence and maintenance truck area. I suppose the next best option is to drive on what Google maps calls "Tank Track" road from Guernsey and park as close as possible to the narrowest part of the river with the extended rocky shore line. This is then a short walk across the river to the base of the climbs below the large power poles. I know climbers and fishermen do this regularly, I just can't give good beta on exactly how to get to this parking area because I've never done it. Jan 14, 2019

The next easiest way to the Powertower wall is to take the BLM land dirt road north that leaves from the west side of the highway 26 bridge just west of the city of Guernsey. Follow this 2 track northward along the river going under the railroad bridge and continuing northward to its ending. There is an ad hoc fishing trail leaving the end of the road and going up stream left side to the base of the powertower wall. It is about the same distance as beginning at the park sups office. No crossing the river is necessary going this way but to get to the areas on the right side of the river the tank trail way likely is better when river crossing is an issue. Jan 14, 2019