The couloir proved to be something of a hard proposition right at the beginning. Jagged rocks, sudden narrow miniature gullies, bushes with sharp thorns, slippery, treacherous shale, made the descent a trying one. Once Margery lost her footing on one of these shale shelfs. She fell flat on her back and slid screaming a full twenty yards, shooting out on a grassy slope little the worse for her slide, except that she had been badly frightened.
Tommy was delighted.
"Wouldn't Buthter make a fine toboggan?" she laughed.
Reaching the bottom of the gully, a long, narrow crevasse in the mountain, they began the real ascent. Up and up they went, now and then lying against a rock, to which they clung, out of breath from their exertions, their faces flushed and warm. Far above them Janus pointed out a little projection of rock that seemed no larger than a human hand.

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