Neck

The Neck is a narrow, swampy isthmus that forms the sole land link between the North and the rest of Westeros, a treacherous region of bogs, quicksands, and venomous wildlife that has served as the kingdom's primary natural defensive bottleneck for millennia. Its strategic importance is defined by the ancient fortress of Moat Cailin, which commands the only dry road—the causeway—through the marshes. In A Dance with Dragons, the Neck becomes a critical military objective: the ironborn garrison at Moat Cailin, abandoned by their king and ravaged by disease and starvation, is forced to surrender to Ramsay Bolton's forces, an event that opens the way for Roose Bolton's army to return to the North and seals the fate of the region's remaining resistance.

Geography and Defensive Significance

The Neck is a vast, waterlogged morass that separates the North from the riverlands. The only dry road through it is the causeway, a narrow log-and-plank road that is easily defended. The ruins of Moat Cailin plug the northern end of the causeway like a cork in a bottle, with three towers—the Gatehouse Tower, the Drunkard's Tower, and the Children's Tower—so positioned that any enemy coming up from the south must pass beneath and between them, exposing their backs to arrows from the other two. The swampy ground beyond the causeway is impassable, an endless morass of suckholes, quicksands, and glistening green swards that look solid but turn to water the instant one treads upon them. The region is infested with venomous serpents, poisonous flowers, and monstrous lizard lions with teeth like daggers. Its people, the swamp-dwellers—Fenn and Reed, Peat and Boggs, Cray and Quagg, Greengood and Blackmyre—are seldom seen but always lurking, and the ironborn call them all bog devils.

The Ironborn Garrison and Its Collapse

After the ironborn seized Moat Cailin, Victarion Greyjoy commanded the garrison to hold until his return, but he never came back. The kingsmoot crowned his brother Euron, and the Crow's Eye had other wars to fight. The ironborn were left to rot, abandoned and forgotten. The garrison was decimated by disease and starvation; the water was undrinkable, and the men were reduced to eating the dead. Ralf Kenning, the commander, was dying from a poisoned arrow wound, his body swollen and crawling with worms. The men were demoralized, with only a few dozen survivors left in the Gatehouse and Drunkard's Towers. The Children's Tower had already fallen to cannibalism and murder.

The Surrender and Its Aftermath

Ramsay Bolton, having learned of the garrison's desperate state, sent Theon Greyjoy—disguised as a prince and bearing a false safe conduct—to demand their surrender. Theon, broken and terrified, convinced the remaining ironborn that they had been abandoned and that their only hope was to yield. After killing the dying commander, he persuaded the garrison to accept Ramsay's terms. The ironborn laid down their arms and were led out of the ruins, only to be slaughtered by Ramsay's men. Their corpses were nailed to posts along the causeway, a grisly warning to all who passed. The fall of Moat Cailin opened the way for Roose Bolton's army to march north from the Twins, allowing him to return to the North and consolidate his power. The event also enabled the Boltons to bring a false Arya Stark north for Ramsay's wedding, a key step in their plan to claim Winterfell.