Not quite sure what you mean by cronbalk, but pasture is essentially just land filled with grass and other plants that farm animals such as cows or sheep consume. Maybe that's what a "pasture hill" could possibly be, a low hill where animals graze. "Chestnut ridge" sounds like it's more of a place than a thing. Not entirely sure what a "mother sun" is either, maybe you meant mother-son? Like a mother and son relationship because apart from it being a song by Judas Priest, I can't think of what else it could be.