Anfauglith

“Thus Ard-galen perished … and it was called Anfauglith, the Gasping Dust. Many charred bones had there their roofless grave…”
Quenta Silmarillion 18 Of the Ruin of Beleriand and the Fall of Fingolfin

The charred desert to the north of Beleriand, created by the flames of Morgoth in the Dagor Bragollach.