Mt. Tweto  
Condition Updates  
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. 
5 2
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. 
3 1
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. 
Route: Southwest Ridge
Posted On: 2019-02-17, By: cottonmountaineering
Info: Excellent coverage in the mosquito range, was able to ski from saddle just below tweto back to London basin,mosquito looks like you could ski directly from the summit 
Route: Southwest Ridge
Posted On: 2018-06-25, By: Bombay2Boulder
Info: All snowfields have melted and route is snow free. Did the loop along with Mt.Evans B. Not traction needed. 
Route: Southwest Ridge
Posted On: 2018-05-29, By: Tony1
Info: No traction needed. I was in trail runners but they got wet, of course. Multiple snowfields to cross, but you can pick your way up and back to have almost as much or as little walking on them as you like. For us, they were mostly supportive even in the afternoon, except at the edges. The final ridge to the summit was the driest part (completely), while the initial walk up the road was the wettest. 
Route: Southwest Ridge
Posted On: 2017-12-31, By: dolfh
Info: Conditions are easy. Except for the wind. The summer trailhead is accessible with a high clearance 4 wheel drive. There are a few snowdrifts on the road to the summer trailhead. Snowshoes were helpful for the first mile after the summer trailhead. Not much snow higher up towards Tweto. 
Route: Southwest Ridge
Posted On: 2016-06-11, By: mike14
Info: The road you hike up has a ton of melting snow and running water for the first half mile or so. After that there are some snow fields where we post-holed a few times up to our thighs, but not too many to warrant snow shoes. Some snow on the slope up, but easily avoided or traversed. Some avoidable snow toward the summit. All in all, pretty good shape. Definitely muddy and wet. Bring extra socks or wear waterproof boots. 
Route: Southwest Ridge
Posted On: 2015-06-28, By: Ericds84
Info: Climbed Tweto from Mosquito Gulch on Saturday. Parked at the bend in the road. The snow can mostly be skirted on the ascent, but I was glad I had my ice axe with me so I could glissade down. It was very warm up there--snow is melting fast, and what‘s left is very soft. 
Route: Southwest Ridge
Posted On: 2012-11-23, By: Eph 2 5
Info: Snow was not much of an issue. The Mosquito Pass Rd. was completely dry. I started near the point where the Mosquito Pass Road goes sharply off to the left and then turns south and goes up the first steep incline. I went north from the sharp left turn on the smaller 4WD road. There was some ice on the road in a few places, but was mostly avoidable. There was some snow in the upper basin below the saddle with Treasurevault, but I only postholed a couple dozen times. There was some snow on the SW ridge, but it was avoidable except for some narrow portions of the ridge. I carried snowshoes and microspikes, but never came close to using them. In addition, some of the peaks in the general area looked very dry. Pennsylvania Mtn. looked pretty dry above treeline. Hoosier Ridge and Red Mountain were completely dry from my vantage point on Highway 9. Silverheels looked pretty dry above treeline if you were approaching if from the south, although I couldn‘t see much of the lower part of that route because it was hidden by an intervening ridge. Quandary also appeared to be pretty dry above treeline except for a thin strip of snow that looked like it was near the main trail above treeline. North Star also looked very dry except for patches of snow along the long east/west ridge. 
Route: Southwest Ridge / Southeast Face
Posted On: 2012-11-14, By: JosephG
Info: Road is passable for any vehicle all the way to the parking area at the Mosquito Pass junction. Sorry, Mosquito Pass itself is closed. After that, the 4WD road into the basin towards Buckskin and Tweto has 1-4" of snow with minimal drifting. The basin to Tweto’s ridge holds even less snow. The ridge itself has small pockets of snow in between the talus, but nothing to get excited about. Snowshoes completely unnecessary. Carried but did not even think of using microspikes. Generally speaking, the northern Tenmile and Gore ranges have a decent cover of snow. The southern area is fairly dry, including North Star, Quandary, Hoosier Ridge, Bross, and Lincoln. 

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