Right in front of her Hero was trotting forward with head carried well in the air, and an eager alertness in every limb.

It was clear the creature felt no uncertainty about its movements, and the feeling that she was going right was an unspeakable comfort to Katherine, who toiled along in the rear.
Suddenly the dog stopped dead short, flung up its head with a weird, dismal howl, then bounded forward at a headlong pace.
What had it heard?
Katherine tried to run too, but the track was uphill now, and the force of the wind caught her the higher she got.

Panting, breathless, her heart beating with fierce, irregular thumps, she toiled up the rocky track, and, crossing the summit, began to descend on the other side.
The gulch was before her now.

When she had seen it last it was a rocky valley, deep in the cliffs, and floored with boulders.

Now it was a long pool, for the tide was in, and the sea, working through the porous, frost-riven rocks, had half-filled it with water.