The Deeping-coomb was a deep valley on the northern side of the White Mountains that led up to Helm's Deep and the castle of the Hornburg.
The Deeping-coomb was a green valley whose grass covered slopes lapped the mounting hills. Its mouth was five leagues (15 miles) from the Fords of Isen.
The Deeping-coomb was the site of an important battle, the Battle of the Hornburg, during the War of the Ring.
