Isobel by James Oliver Curwood

Out of the gloom a sledge approached slowly. It took form at last in a dim shadow, and MacVeigh saw that it would pass very near to him. He made out, one after another, a human figure, three dogs, and the toboggan. There was something appalling in the quiet of this specter of life looming up out of the night. He could no longer hear the sledge, though it was within fifty paces of him. The figure in advance walked slowly and with bowed head, and the dogs and the sledge followed in a ghostly line. Human leader and animals were oblivious to MacVeigh, silent and staring in the white night. They were opposite him before he moved.

Then he strode out quickly, with a loud holloa. At the sound of his voice there followed a low cry, the dogs stopped in their traces, and the figure ran back to the sledge. MacVeigh drew his revolver. Half a dozen long strides and he had reached the sledge. From the opposite side a white face stared at him, and with one hand resting on the heavily laden sledge, and his revolver at level with his waist, MacVeigh stared back in speechless astonishment.