7/11/2025 Route: Southwest Ridge Posted On: 7/11/2025, By: HikesInGeologicTime Info: A few sections of mud/running water on the road, largely inconsequential. Some lingering snowfields, but all easily avoidable. Some cairns to follow through the rock to avoid the worst of it, but that is not avoidable. Will post separate TH update for Mosquito Creek. |
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6/20/2025 Route: Southwest Ridge Posted On: 6/21/2025, By: dcsheldon Info: Getting to the trailhead - there are 4 large puddles immediately before reaching the trailhead. I would not take a 2wd sedan through them. Hiking up less than 1/2 mile from the trailhead there is a water creek crossing the road/trail. You can detour going uphill to the right and walk across snow over the creek. That held up early and late morning and did not posthole on that. There is only one other snow field to cross to get to upper basin. I just used spikes for that. I had wanted to do Arkansas but decided not to when I got a view of the route to the Arkanasas false summit. |
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4/26/2025 Route: Crack Couloir/ North face Posted On: 4/26/2025, By: Veory Info: After getting down from moonshine, skinned over and climbed the Crack Couloir. There was a boot pack there already but some of it had been filled in. If skiing this line, there's a short section of rocks at the top that have to be walked, but would otherwise ski continuously. Decided to drop the north face line instead because I had a hunch the snow would be better (and it probably was). Also a very short section of walk over rocks below the summit, then some side slipping through more rocks, followed by a somewhat thin but generally very nice decent. Was nice to have a single track to follow to make sure we hit the exit. Climbed back up the ridge after and hit another line that didn't go from the summit. |
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10/14/2024 Route: Southwest Ridge Posted On: 10/14/2024, By: seoulman Info: Summer conditions, but that's not why i'm posting this. I found something of ocular utility on the saddle. If you lost something and your description matches the item I have, pm me and hopefully we can work something out. |
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3/3/2024 Route: Tweto-Treasurevault-Mosquito Posted On: 3/3/2024, By: Geckser Info: Arthurspiderman and I did the ridge traverse from Mosquito to Tweto, mostly on skis. Due to the downright terrible forecast, high winds, and worrisome snow we wanted to do something close that we would not mind bailing on. Luckily the winds were fairly tame in the morning and the snow conditions were better than expected. We started at the winter trailhead for London Mill, followed the road up to Oliver Twist lake and then took a rocky rib up to the main ridge of Mosquito where we skinned to the top. We were able to ski down the ridge of Mosquito, boot pack up Treasurevault and start the ski towards Tweto. The ridges were remarkably well filled in. The base of Tweto is when the winds really stated blowing, probably 50 mph gusts. We hit Tweto, descended the ridge into the basin and skied back to the road near London Mill. You can ski from about 10 feet from the top. This section of skiing was great, mellow and over some very interesting terrain. Once we were at the London mill we put our skins back on and toured out. We learned last year that pushing through this road is difficult and unpleasent. By this time the wind was really howling. Overall a very fun, and relatively avy safe winter route. If you wanted to add Kuss or London it would not add too much to the trip and might make gaining the main ridge line a bit easier. |
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8/20/2023 Route: Southwest Ridge Posted On: 8/20/2023, By: madmattd Info: Looped with London and Mosquito. No snow on route, a little damp in places on the road descent, but nothing notable. Coming off the summit I didn't go all the way back to the saddle, but traversed gradually down towards the basin below (but still somewhat towards the saddle) on the same semi-stable talus that the ascent from the Treasurevault saddle entails. Once off the talus, there's a nice grassy descent down to the road. The road is a little tedious to walk in the lower half due to the rocks, but it gets the job done. Saw a huge group of people with a couple dozen donkeys heading up the road not far below the remnants of the old mine site (just a roof a few odds and ends the best I could tell). |
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6/24/2023 Route: Southwest Ridge Posted On: 6/25/2023, By: cougar Info: Did the loop including London and Tweto. Both roads from the parking area are streams with lots of water. The deep puddle just below the parking spot is still there, and gets deeper during the day. There are some snowfields in spots, up past north London Mine. Ridge to London is mostly all dry and any snow is avoidable. More snow on Kuss, especially on the summit, but rather firm. East slopes of Mosquito still have a lot of coverage from summit, can probably get a 1000 foot vertical run. Most of the unavoidable snow is along the ridge from Treasurevault to Tweto, less while ascending Tweto. Postholed a bit there. I didn't use traction but found poles helpful. The stream in the road going up to the London mine had an iced over surface in the morning. Very windy day. |
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5/27/2023 Route: Southwest Ridge Posted On: 5/27/2023, By: sarahmariekirk Info: Climbed Mount Tweto today along with Treasurevault Mountain (posted peaks conditions report separately) with Cash. Snow is melting super fast, and made for variable conditions today. We booted up to the first slopes where we put on snowshoes to gain the ridge to Tweto (crampons would have worked better due to the grade of the slope). We chose a pretty steep line in order to gain the ridge faster. Stashed the snowshoes higher on the ridge because everything up there is slushy, posthole hell. Beautiful summit views today, lots of moody clouds. |
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4/16/2023 Route: Southwest Ridge Posted On: 4/17/2023, By: Svobatron Info: Did Tweto, Treasurevault, Mosquito and Kuss. Snow is melting but still had to park 2 miles from the summer TH. We brought snowshoes, I wore them for maybe a mile, the other 2 people with me kept theirs off. Snow still covers a lot of the ridge and be careful with the cornices! I had unknowingly hiked the cornice between Treasure vault and Mosquito and my GPS added a lot of vertical ft thinking I downclimbed then back up over and over :|. 12 miles total. |
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10/29/2022 Route: Southwest Ridge Posted On: 10/30/2022, By: bangerth Info: We did the Tweto -> Treasurevault -> Mosquito -> Kuss loop yesterday and winter is definitely here. There is between 4" and 2' of snow pretty much throughout the entire route. Two of us wore microspikes for the entire distance, two others took them off at the top of Tweto -- either was probably fine, but bringing them doesn't seem like a mistake. Most postholing can be avoided, but expect to just be stuck down to your knees half a dozen times throughout the route. |
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10/20/2022 Route: Southwest Ridge Posted On: 10/20/2022, By: cardgenius Info: Snow on the grassy slope up to the ridge but is avoidable if you stay right. No snow on the ridge except for small patches you can step over. Bring spikes if you plan to traverse over to Treasurevault Mtn. The whole slope is covered in super slick, bulletproof snow. |
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6/28/2022 Route: From Buckskin Posted On: 6/28/2022, 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. |
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6/20/2022 Route: Southwest Ridge Posted On: 6/20/2022, 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. |
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11/9/2021 Route: Mosquito Peak to Arkansas Posted On: 11/9/2021, 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. |
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10/23/2021 Route: Southwest Ridge Posted On: 10/24/2021, 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. |
