We arrived at the Lena Lake TH around 2:00pm on Saturday planning to hike to basecamp and summit South Brother on Sunday am. We passed several dayhikers on their way out on the Lena Lake trail several setting up camp at Lena Lake. No bugs at this time, overcast sky but no precip. The trail is in excellent condition. The trail section from the lake though the Valley of Silent Men has a couple of blowdowns and one main trail washout over which you need to route around. There are a few ribbons to mark the trail but it's difficult to get lost on this section. The snow starts in the valley at around 2900 ft. Climber's Camps are still on snow at 3000ft. We started for the summit at 5:30am. The "faint boot path" from basecamp to the open meadow is difficult to locate because of snow and blowdowns. There are some ribbons which help but it takes some effort and nav skills. Prior to the open meadow at 4000ft are large amounts of avalanche debris and still all snow. Ribbons are not in this area. There may be some tracks to follow at this point but a map with a good trail description is helpful (or a GPS). The climb to the summit was enhanced by the use of crampons and having snow soft enough for a good purchase but no postholing, and consolidated enough not to side. Helmets were necessary, especially for the traces of rock and scree fall at the final summit block. The skies were clear on the way up: the volcanoes, Cascades, Hood Canal, South Sound, and surrounding Olympic range were visible. The clouds obscured our view of Seattle on the summit but the goats made up for any missing views. We did decide to rope up on the way down the steep chute which we could plunge step in fairly well but thought we'd be cautious. Some folks in the group safely glissaded from the below the lunchrocks back to the open meadow. Great challenging climb and such a spectacular range of terrain to cross. Great day!! TH to camp 4 hrs, camp to summit 5.5 hrs, summit to camp 3 hrs, camp to car 3 hrs. Recommend crampons, ice axe, helmet and maybe some protection especially as the snow begins to consolidate more and become icy. Very, very steep chute to climb.