Grettir now deemed it advisable to go about the country in disguise, and, under the name of Guest, came to a place called Sandheaps, much haunted by trolls. Two winters before he arrived the husband of the good-wife had mysteriously disappeared during her absence, none knew whither; her name was Steinvor. A loud crashing had been heard in the night about the man's bed, but the folk were too frightened to rise and find out the cause; in the morning Steinvor came back, but her husband was gone. Again, the next year, while she was away at church, a house-servant remained behind; but he too vanished, and bloodstains were found about the outer door. Grettir was told of this when he came to Sandheaps on Christmas-eve, staying there under the name of Guest. Steinvor, as usual, went away to worship, and remained absent that night, leaving Grettir at home. He sat up to watch, and about midnight he heard a great noise outside, shortly after which there came into the hall a huge troll-wife, with a trough in one hand and a monstrous chopper in the other. Seeing Grettir she rushed at him, but he closed with her, and there was a terrible wrestling match. She was the stronger, and dragged him from the house, breaking down all the fittings of the door; down she dragged him to the river which flowed through the farm, and Grettir, exhausted with the struggle, was well-nigh at the limit of his endurance. Making one last great effort, he managed to draw his short sword and strike off the hag's arm at the shoulder; then was he free, and she fell into the gulf and was carried down the rapids. This, at least, was Grettir's story; but the men of the neighbourhood say that day dawned on them while they were still wrestling, and that therefore the troll burst; for this trolls do, according to Norse tradition, if they happen to be caught above ground by the rising sun.