Climb the Dike, ski the slides
TonyL,
I've done the trip several times. In my opinion, this is the best winter day trip in the Adirondacks. The climbing is great, and the skiing is great, and it represents excellent style overall, being a full traverse of the mountain.
I don't know your experience / equipment level, so excuse me if some of this is too basic.
Avalanche potential:
Both the dike and the slides are ripe with avalanche potential. Make sure you know what you're doing. Remember conditions can change quickly.
Climbing the dike:
Once you get to Av Pass, shoot right along the lake to the base of the dike. If you're not familiar with the area, don't confuse the "Adirondike" ice climb with the trap dike. Coming from the Loj, the adirondike comes first (N) and is intimidatingly steep. The trap dike is wide and obvious, with a large debris / tree cone at its base. I usually hike up the tree cone, and then switch to climbing mode just before I enter the mouth of the dike. I try to minimize my time in the dike (speed is safety).
The dike climb varies greatly depending on conditions. It is definitely a technical climb, requiring crampons and technical experience. It is not a "hike." But at this time of year, it's usually mostly a snow climb. There will be a few sections of exposed ice, most notably at what's known as the "second waterfall", which can be a steep ice step about 30' high. The equipment you bring and the style you use depends on conditions and experience. I have soloed the dike with just a long axe in big snow years, and I have led the dike with two short tools and placed screws in leaner years. Remember that your climbing will be complicated by carrying skis, and that you want to move quickly up and out of the dike, because it's a terrain trap for avalanches. The easiest exit is when the grade eases. You'll see some pretty frozen waterfalls on the left side, and a wide snow slope on the right.
Climbing the slide:
After you exit the dike, you still have a lot of slide to climb. Again, conditions vary, but this is basically mountaineering. Brush up on french technique, self arrest, etc. People have been killed on this section. Watch the wind; it can blow you off your feet, especially when carrying skis (sails).
The slides above the dike will bring you to the summit ridge at a large boulder. If you're interested in tagging the true summit, go left (N) along the trail on the ridge about 200', and there's a little side trail that goes up about 15' to the summit.
Skiing the slides:
The best slide for skiing is the Lake Arnold slide, that runs SE towards Marcy. People have skied the dike, but it's rarely in condition for skiing unless you're sicker than me. The slides that run toward Av Pass are dangerous, and end in cliffs.
If you've looked at the Lake Arnold slide, you know that there is a steep top section, which is paralleled by older slides to skiers right (S). The steep top of the LA slide often is bare rock, because it's very new (12 years) and there's not much to hold snow. Usually, I ski the older slide down to it's end, and then traverse left a few yards through the woods to the LA slide's lower section.
The very summit ridge has some small cliffs (12') that are a pain to get down. Therefore, the best way to get to the top of the skiing is to take the trail along the ridge S for about 150' and then hook down around left to the top of the slide. This will bring you to a nice spot where you can switch to skis.
Don't forget that Avalanche conditions can be different on the SE side from the NW side. Be careful!
The skiing is moderate all the way down. The top part, on the old slide, is wide open with a few scattered trees (very "western" looking), and about "single black diamond" in steepness. After you get to the trees on that slide, you traverse left to the long run out on the LA slide, which is mostly "blue square", with a couple of steeper spots.
Exit:
The slide will bring you to the Lake Arnold Pass trail. At the bottom of the slide, you will see a flat area of slide that curls around to the right (S). Don't follow that all the way to the end. When you get to the end of the straight section, cut straight through the woods due E. It's only about 200' to the trail. To return to the Loj, turn left, climb the long hill up to Lake Arnold, and then enjoy the relaxing ski out.
Equipment:
I usually carry a long ax and a short tool. In good years the short tool stays on the pack. Rope, screws, harness, all depends on you and your partner. I use my Grivel 2F crampons, because they're flexible, and have wide horizontal front point for snow climbing, but are still OK on moderate ice.
I use Karhu Catamounts for skis. There's quite a bit of up and down on the trails and these work well. A wider, "lift served" type ski would probably be better on the slides, but not as good on the trail. Of course this will vary with your plan. You could snowshoe in and carry skis, etc. Many variations are possible.
For boots, I just go in my Scarpa T1s. They ski great, they climb pretty well, and they're pretty warm. They're a little heavy, but oh well. If you are going to use this kind of set up, make sure to set your crampons up at home for the boots. You need to extend the front points to get far enough past the "duckbill" on a ski boot.
I use extendable poles, so I can put them away on the pack when climbing.
Have a great trip!
TCD