I'm driving up a mountain with someone, but then we stop and get out of the car, and start walking up the hill in the snow. Then I remember that we are racing someone, and they kept driving above where we stopped. We should have driven farther up. So we rush, practically running up the hill, and I leave my companion a ways behind. The terrain turns into a snow cave, a long tunnel up the hill.

There's a bit of rock to climb, and I remember that there's a difficult crux, but no, that doesn't seem as hard as I recall. Then there's another one, but no, that wasn't it either. One of them is supposed to be hard, near the top.