The Mines of Moria had a few different adaptations, wending through Balin’s tomb and down all those rickety staircases and across the bridge where Gandalf faced off against the Balrog. There were other Lord of the Rings maps as well, though none quite as successful as Helm’s Deep. Hell, I think I even tried to create one.
I must’ve played dozens of different iterations back in the day. Modders competed, creating ever-larger and more sophisticated simulations of the battle. Dynamic, in a way that most Warcraft III maps were not. It felt…well, maybe not real, but cinematic.