A field on the western banks of the Narog, bounded by Narog's tributary, the Ginglith. It is famous as the site of the last desperate defence of Nargothrond against the onslaught of Glaurung, a hopeless battle in which the Elf-lord Orodreth was slain.
Notes
1
The name Tumhalad is not explained. It seems to contain tum 'valley', and also possibly lad, 'plain' or 'field'. We might tentatively interpret it as something like 'field between valleys' (that is, a flat region between the vales of Ginglith and Narog), though it far from clear whether this is the intended meaning.