Thoradin's Wall

Thoradin's Wall is a huge wall separating the Arathi Highlands from Hillsbrad Foothills. The wall protected the Kingdom of Stromgarde from the invading Scourge forces during the Third War. Due to this, the Arathi Highlands have been relatively untouched by the Forsaken and Scourge forces since.

Thoradin's Wall, an immense edifice on the northern border, was once a symbol of humanity's strength and defensive might. Now, the wall has fallen to decay and war. It is collapsed and gaping wide.

(As described on the WoWWiki.)