the uncultivated fields, studded with tiny pines and underbrush, that stretched their rolling red-clay surface away intoay intothedistance on four sides

콤마 that은 못오는걸로 아는데 어떻게 올수있나요

away into는 stretched와 구동사로 쓰인건가요? 어떻게 쓰이고 어떻게 해석해야 되나요ㅠ