Helm's Deep

Location from The Lord of the Rings by J.R.R. Tolkien

Rohan's mountain fortress — the Hornburg and its Deeping Wall backed into an impassable gorge, where desperate last stands become legends.

Also known as: Helm's Deep, the Hornburg, the Deeping, Aglarond

What They Know

The Deeping Wall has a culvert at its base for the stream — a potential vulnerability if an attacker knows about it
The Glittering Caves behind the fortress are vast and beautiful — Gimli declared them a wonder to rival anything in Erebor
Helm's Deep can shelter the entire population of the Westfold behind its walls
The fortress is named for King Helm Hammerhand who held it during a terrible siege
Saruman's Uruk-hai used a blasting fire (gunpowder) to breach the Deeping Wall — a tactic never seen before in Middle-earth