Mt. Tweto  
Condition Updates  
Route: From Buckskin
Posted On: 2022-06-28, By: cougar
Info: Attempted to traverse from Buckskin, but thunderstorms and graupel started mid morning despite the relatively dry forecast. The ridge is slow going, lots of loose junk, some snowfields lingering on the south side, covering the easiest path. Turned back at halfway point since I had to reclimb Buckskin to get back. There are a few cairns and nothing technical, but most of it is scree and loose talus. Some holds broke. 
Route: Southwest Ridge
Posted On: 2022-06-20, By: ncxhjhgvbi
Info: Descended Tweto after the full cirque (London, Kuss, Mosquito, Treasurevault). Hit the road around 4:45pm. Tons of meltwater on the road and multiple crossings. Some long portions are just a creek. Quite nice to cool the feet off after 4.5 hours of moving, but maybe not so nice if you're ascending. Water in spots 6in deep or so with no easy way to cross. Expect it's better early in the day though. All snow avoidable during the entire cirque traverse. 
Route: Mosquito Peak to Arkansas
Posted On: 2021-11-09, By: zootloopz
Info: Plenty of snow. Intermittent rock hopping mixed with knee deep drifts. Pretty unconsolidated. No traction needed on the SW ridge, but used spikes for the ridge to Arkansas. 
Route: Southwest Ridge
Posted On: 2021-10-24, By: CheapCigarMan
Info: This was similar to Kuss, boulder and rock hopping. No flotation or traction needed. The ridge around from Treasurevault to Tweto was mostly dry. Nothing newsworthy. 
Route: Southwest Ridge
Posted On: 2021-09-10, By: sigepnader
Info: Road to “trailhead” is clear until right before the split. Two deepish water crossings. High clearance will have no problems with this. Route to Tweto/Treasurevault/Mosquito is dry and clear. Easy to navigate. 
Route: Southwest Ridge
Posted On: 2021-07-10, By: dwoodward13
Info: London->Kuss->Mosquito->Treasurevault->Tweto loop is in full summer conditions. 
Route: \"Crack\" Couloir
Posted On: 2021-06-04, By: ClimberSkierDave64
Info: Skied the "Crack" Couloir on Wednesday and we were able to drive about 0.5 miles up from the highway to near the railroad crossing. The first 2.0 miles of the approach are patchy and not continuous. From the end of the trees and road after the first two miles, snow in the basin becomes continuous to the summit. The Couloir is in, but it became heavy mashed taters by 9am even with a good freeze, so hit it early. We skied from the summit down the Couloir which was heavy with small point releases and sluffs on the way down, and there is definitely a runnel forming, which was a bit annoying on the ski. Overall, it was a really unique line that was a lot of fun, but the bushwhack out through the willows was horrible! Saw tracks down Democrats west face and it looks continuous, but Buckskins NW couloir is definitely out, not enough snow. 
Route: Southwest Ridge
Posted On: 2021-05-29, By: pmp6
Info: Road clear until the fork to London Mill (~11,500'). We used hiking boots to the summit; microspikes stayed in the pack. You can definitely make it to the summit avoiding any high risk terrain; we did at times climb slopes steeper than 30deg (and below them), but those slopes had no snow. We did a touch of postholing ( 
Route: Southwest Ridge
Posted On: 2021-01-31, By: Sbenfield
Info: Parked below the TH since snow and ice on the upper bit of the road. Snowshoe up most of the way into a cool basin. Went mostly directly up the south face of Tweto, easy to follow. Then took the straightforward ridge over to Treasurevault Mtn after stashing packs/gear at the saddle. 
Route: Southwest Ridge
Posted On: 2020-12-05, By: jbealer
Info: 4wd road was snow covered in places but we were able to drive to the parking spots in front of the true off road part of mosquito pass. We took the summer trail up to Tweto wearing spikes, left ice axes and snowshoes in the car. We were passed by some guys later on that broke the rest of the trail, thanks! We followed their tracks and cut up tweto before the gully/saddle section. It was steep, deep snow in stops with loose rocks, 2 of us had poles, 1 nothing, she wished she had her axe with her for support. Those guys headed to Arkansas and we didn't see them again. We continued on to treasurevault, mosquito and kuss, making a loop. The ridge was a mix of rock and deep snow patches that were not supportive. We discussed if snow shoes would have helped and decided based on the bare sections we would have been putting them on and off all day or scraping them on the rock. We suffered with the postholing. Spikes stayed on all day, could have used the axe on a few snow fields. The descent off Kuss held some of the deepest snow all day, be careful of the hiding rock, mosquito Pass Road off Kuss was covered in more snow then expected, we stuck to the outside edge where it was less deep. Overall not bad for Dec, lacking snow for sure, but enough to make everything extra work. Get it while you can! 
Route: Southwest Ridge
Posted On: 2020-09-26, By: daway8
Info: Came up Tweto first and then over to Arkansas - passed colin j coming and going (he started from Arkansas I started from Tweto). Together with his update I can say their is no snow in the way from either direction or along the traverse (and yes, it was a windy day, but got much worse after traversing past Buckskin to Loveland Mountain). 
Route: Southwest Ridge
Posted On: 2020-07-09, By: CatsAreMyFriends
Info: Summer conditions, but still pretty wet. Sparse snow remains on the ridge, but you can avoid it or just cross it in boots, it's all flat and safe. The road is also in fine conditions up until about 600 feet from the usual trailhead, where a huge murky puddle hides a roughly 1 foot drop off, just park nearby rather than risk the fording. The skid plate of some unfortunate soul is floating in it. 
1 1
Route: London
Posted On: 2020-04-30, By: angry
Info: Went up London, Kuss, Mosquito, Treasurevault and Tweto. Parked 2 miles below trailhead. Booted up the road to summit of London. Snow was supportive. Wore microspikes from Kuss all the way to Tweto. Any cornices along ridge are avoidable. Snowshoes were necessary on hike out. 14 miles rt, ~4000ft gain. 
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Route: Southwest Ridge
Posted On: 2020-01-27, By: Dad Mike
Info: Climbed Tweto, Treasurevault, Mosquito, Kuss and London from Mosquito Pass Road (see TH condition for info). Road was pretty well tracked up from skiers and snowshoers up into the basin. Snow conditions above the road were wind-scoured and firm. I used snowshoes for most of the way, but probably could have gotten away with just microspikes. The descent from London wouldn't have been too much fun without them, but doable. 
Route: Southwest Ridge
Posted On: 2019-12-06, By: WildWanderer
Info: Mixed, early season, varying snow/ice/etc. conditions. I wore microspikes from the lower trailhead to the London Mine an then wore snowshoes to the summit. Snowshoes were mandatory to summit but overkill at times. Made a good trench to the upper basin that should last a while, but the trench I made from the upper basin from was windswept on my way back down. Snow ranges from nonexistent to 4 feet deep. Ice axe nice but not mandatory. Verglas on final stretch to the summit (where switching to microspikes would be useful, but I kept my snowshoes on because I'm lazy). 
Route: Northwest Ridge and South Slopes
Posted On: 2019-10-01, By: supranihilest
Info: I ascended Tweto from Mount Arkansas then descended back into Mosquito Creek drainage. The northwest ridge from Mount Arkansas is boilerplate Class 2 talus the entire way. There's maybe one or two short trail segments but they're hardly worth mentioning. It's a steep ridge but it's not as bad as it looks, and with how steep it is it's over quickly! Descending the southeast slopes is easy but a little tedious with how loose the dirt in particular is. Once on the tundra go towards Buckskin and find an old road, then follow the road. 
Route: Southwest Ridge
Posted On: 2019-09-02, By: LetsGoMets
Info: Dry, summer, avoidable snow. 
Route: Southwest Ridge
Posted On: 2019-08-05, By: E_A_Marcus_949
Info: Combo'd with Mosquito loop, though we started with Tweto then Treasurevault -> Mosquito -> Kuss then back down. One snowfield on Tweto but entirely avoidable - would recommend going up and around to the ridge and taking that to the summit rather than the face. Either works though. Otherwise, summer conditions! Some creeks to cross hiking on the road up to the saddle on Tweto. 
Route: Loop with Mosquito
Posted On: 2019-07-15, By: HikerGuy
Info: Did the loop with Mosquito/Treasurevault/Kuss counterclockwise starting with Tweto. Essentially summer conditions, no gear needed. Any snow to be crossed was either very short or flat and all of it was supportive. Meltwater is running down most of the mining roads. 
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Route: Southwest Ridge
Posted On: 2019-03-16, By: cottonmountaineering
Info: Good conditions, there are large debris fields from the past avalanche cycle on the approach. Snow was crusty/firm down low, windblown/sastrugi in the upper basin, then excellent firm snow for skiing on the upper mountain. There was also a guided backcountry group in the area ascending a loaded slope with 6-8 person groups, without any spacing between skiers. I observed that the aspect they were ascending had slid in two areas of similar slope angle up and down valley. The CAIC forecast for above treeline is still considerable in this area. If you are going on guided tours make sure your guides are AMGA certified and have suitable avalanche training. 

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