that same harvest thorstein fared out to hoskuldsey to fish ; but on an evening of harvest a shepherd-man of thorsteins fared after his sheep north of holyfell ; there he saw how the fell was opened on the north side , and in the fell he saw mighty fires , and heard huge clamour therein , and the clank of drinking-horns ; and when he hearkened if perchance he might hear any words clear of others , he heard that there was welcomed thorstein codbiter and his crew , and he was bidden to sit in the high-seat over against his father .