River Tunnel

Narrow passage bored under the city wall by the riverbed, a hundred meters deep, steel grates, prepared by Sons of Ares.

The River Tunnel begins as a covert Sons of Ares excavation beneath the city wall, a hundred meters deep and sealed by steel grates. Across the series it transforms from a clandestine infiltration route into a strategic chokepoint that repeatedly alters the balance of power in the war for Mars. Its repeated use underscores the Sons’ ingenuity and the Republic’s evolving tactics, turning a single hidden passage into a symbol of rebellion’s reach.