Mornings and late afternoons one meets the men singly and afoot on unguessable errands, or riding shaggy, browbeaten ponies, with game slung across the saddle-bows.

Only, if one paused to listen on the brink of an aven, there were odd and disturbing noises to be heard underfoot, liquid whisperings, grim chuckles, horrible gurgles, that told of subterranean streams in spate, coursing in darkness to destinations unknown, unguessable.

The inference was that she was married and that her husband's name was Geoffrey Annersley, but where he was and why she was traveling across the United States alone and from whence she had come remained utterly unguessable.

The blizzard, Nature's protestthe crevasse, Nature's pitfallthat grim trap for the unwaryno hunter could conceal his snare so perfectlythe light rippled snow bridge gives no hint or sign of the hidden danger, its position unguessable till man or beast is floundering, clawing and struggling for foothold on the brink.