So, like a ship with its "port," "starboard," "steady," we tramped through the fog for the next two hours.
Then, as daylight came, the fog thinned and lifted, and from an elevation of about 3000 ft.

we looked down on what seemed to be a huge frozen lake with its farther shores still obscured by the fog.

We halted there to eat a bit of biscuit while we discussed whether we would go down and cross the flat surface of the lake, or keep on the ridge we had already reached.

I decided to go down, since the lake lay on our course.

After an hour of comparatively easy travel through the snow we noticed the thin beginnings of crevasses.