Northern scree route (Chachani)

Page Type
Peru, South America
Route Type:
Hiking, Mountaineering
Spring, Summer, Fall, Winter
Time Required:
Most of a day

Route Quality: 0 Votes

901 Hits
80.49% Score
Log in
to vote
Page By:
Northern scree route (Chachani)
Created On: Oct 25, 2016
Last Edited On: Dec 8, 2016


Reading from agencies’ websites, this is not the normal route up Chachani, but it is neither an obscure route. We met one guided group and two locals. I named it "Northern scree route" since it climbs almost from directly North on a scree. Please comment if you know another name.

This is a hike and not a climb. It is achievable by fit and acclimatized hikers without previous mountaineering experience, like the Azufrera route. It can be done in one or, more often, two days.

Some trivia, or how I got lost, alone, in the dark, with no map, and with the wrong route description...

Tourist map
The only map I found in Arequipa...
As I flew into Bolivia to join a friend of mine to do some mountaineering, a problem prevented him from leaving Peru. Arequipa being geographically between me in La Paz and him in Lima and the only chance we do a mountain together, we decided to give Chachani a go, even if I only had three days at altitude and he has been in Lima for too long. So we both hopped on night buses into an unplanned adventure.

I arrived in town before dawn, took a nap, wandered around until trekking agencies opened, and looked for transport. Group tours were leaving around 8 am and my friend would arrive in town only at 9:30 am, so that would not work; and I had to head back for Bolivia the next evening, so we had to leave the same day. Only one agency could do it (Ok Peru Viajes Y Turismo, Jerusalén 301), for 400S/. Do yourself a favor and search earlier than me...

I downloaded the route description for the Azufrera route, tried and failed to find a map, met my friend, shopped for food, packed, and swiftly left at noon, 4 awake hours after getting in Arequipa. Little did I know that our driver would not bring us to the Azufrera trail head. It is only after the trip, while trying to understand how we failed to follow the route description and got lost, that I found out we were on another route…

Getting There

Unnamed Image
Drive to trail head

See the mountain’s main page. Agencies say that a high clearance vehicle is required, but with some off-road driving skills, a normal car can get to the trail head. Do not expect any taxi driver to accept such task.

From Arequipa, follow the road between El Misti and Chachani and turn left at the Reserva Nacional Salinas Y Aguada Blanca sign until S16°10.507’ W71°26.187’. Alternatively, follow the road West and North of Chachani, and turn right to reach the same spot. It is 9.2 km horizontally and 1000 meters vertically from the trail head. Follow a dirt track West and keep right at a fork at 1.7 km. The left track will lead to the Azufrera trail head. The track ends at the trail head on a col at 5094 meters. Camping is possible there, but go slightly further to avoid the high winds that blow through the col.

The drive took us 2 hours, driving Peruvian style…

Useful maps

Satellite map
3D satellite map, looking SSE
Unnamed Image
Topo map from US Defense Mapping Agency, North is up

Route Description


Unnamed Image
Easy to follow trail

From the col, a well-worn trail heads WSW, descending to 5048 meters.

Unnamed Image

After 1 km, the trail meets a 200-meter-wide talus. Some signs painted on the boulders guide hikers, but feel free to route find, keeping the same general direction. This scramble will definitely drain some energy.

Unnamed Image
The trail reappears after the talus, and will soon start ascending. 1.2 km later, at 5196 meters, camp is found in an open field, with plenty of room for tents and even two pit toilets. 
Unnamed Image
Other lower campsite
A group camped lower, but I see no reason to descend to their location only to re-ascend the next day.

From the campsite, a scree is visible SSW, with a rocky ridge on its right and another scree partly visible behind. Take mental note or a picture!

The 2.5 km approach took us 1 hour 40 minutes, with full camping gear. 


An alpine start is warranted if there is snow. Else, enjoy more sleep.

We were told to be on the road at 1 am and out before noon even if there was no snow, the afternoon heat being the reason. The truth is that they will bring the next day’s hikers in around 10:30 am, so they want to minimize their drivers’ and cars' downtime. Clever. We left at 3:20 am, but only because I wanted to see some Arequipa in the afternoon in my short 40-hour passage in Peru.

Unnamed ImageKeep this image in mind. The green line approximates the way I took. The blue line is what I believe would be the easiest way up on scree.

Unnamed Image
If lost, aim right and up
Head up the scree SSW from the campsite. A packed trail zigzags up on the climber’s right side of the scree. The trail eventually splits, recombines, disappears and reappears. There is no single way up. Should the scree become too loose, one can alternatively reach for the rock ridge on its right or another scree even more to the right. I found all options to be equally painful, but at least the slope gets shallower the more one heads right. As soon as there is snow, get the crampons and ice ax and life becomes easier.

Unnamed Image
Finding the trail again at 5700m

Between 5300 and 5350, I “lost” my friend for altitude sickness and soon after the trail. Should you get lost too, look up and aim to the right of the highest visible point. I found a trail back at 5700 meters, 1.8 horizontal km from camp, but I cannot confirm a continuous link from 5350 meters (there is probably one).

Unnamed Image
Rock field
At 5700 meters, the rock ridge disappears and the trail traverses to the climber’s right (West), before ascending again to the right of a rock field. This is the physically hardest part of the climb if there is no snow. The scree to the left of the rock field is very loose, but on good snow a direct ascent should be possible. I went through the rock field and triggered some rock falls; only do this if alone. 

Unnamed Image

The trail ascends close to a ridge and traverses left (East). There is some exposure here. On scree or dry snow, the traverse is easy; on ice or wet snow, this is the technically hardest part of the climb, but is short. 

Unnamed Image
Crater, penitentes, and final slope

Get up the ridge, which becomes the crater rim. The summit can now be seen on the opposite side. Head down around the crater, which was beautifully decorated with penitentes when I was there, and walk up the final slope. 

The 2.7 km ascent took me 4 hours. The guided group I met took 5.5 hours. One local made it in 3 hours…


The same way as the ascent. Wet snow can be tricky after sunrise, but may allow glissading. Watch for rock fall if glissading on scree and warn downhill climbers.

The 2.3 km descent took me 1 hour 5 minutes doing some semi-glissade on the upper slope and some scree-skiing on the lower slope. Expect 1.5 to 2 hours if walking.

The 2.4 km return to the trail head took us 1 hour 10 minutes.

Total vertical: +1079m, -85m 

Unnamed Image
Unnamed Image
Misti on the left, Arequipa on the right

Essential Gear

In early October 2016, my feet never touched snow (except for the fun of kicking a penitente!). Crampons and ice ax are required if there is significant snow.

Sand stakes may be overkill, but having some rope to tie the tent to rocks is wise as the ground is loose on the campsite.

When to climb and other practical information

There will be more snow and cloud in the summer and fall, and more scree in the winter and spring, so the choice is yours. See the main page for more on weather, water and camping.

See the main page for prices, guides and navigation. Again, this is more a hike than a climb, and can easily be done unguided. Avoid guides who insist on an alpine start in dry season.

Doing the hike in one day may be easier than in two. I do not know if the benefit of one night at 5200 meters on acclimatization outweighs the short night most people get at that altitude.

If altitude sickness strikes at the campsite, going down to the trail head will only get you 100 meters lower. So walk further down the car track if it gets really bad.

View from Arequipa
Sunset on Chachani from Arequipa

If you climbed on snow, congratulations, you just did some mountaineering! If you climbed on scree, you now hate scree. I now hate scree.