The Barrowfield was a field outside the wall and dike of Edoras where the Rulers of Rohan were buried. By the end of the Third Age there were two rows of tombs: one for the First Line (Eorl to Helm Hammerhand) and one for the Second Line (Fréaláf to Theoden). The main road leading to the city passed between these two rows.
Simbelmyne grew on the western side of the mounds, and more thickly on Helm's.
The name means "a field containing a grave-mound".