"Now I feel really stupid. Maybe the altitude was affecting me. Maybe I never looked upward from the track I was walking. Maybe I didn't know what i was looking for. Judging from these videos, now how far were we from Iceberg Lake?"
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Hi Reno,
No reason to feel stupid. I have no idea the actual statistic, but I "guess" that at least 50% of "first attempts" of difficut hikes going "a bit off trail" fail. Weather can play a role. Getting better "beta" about the route can play a role, etc.... Certainly the Mountaineers route meets this criteria. Not really a "trail", and certainly difficult with the altitude and incline. No way to tell exactly how close you were to reaching the plateau at Iceberg Lake, but most likely less than 300 yards. No doubt if you had known how close you were you would have reached it.
As said earlier, you just have to go back
You have worked hard to get into shape. Perhaps now is the time. Weather forecast is finally starting to improve, so time to "pull the trigger"?