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From A Wiki of Ice and Fire
The Saltspear is a long inlet that opens into Blazewater Bay in the North. At its eastern end is the mouth of the Fever River, whose headwaters are in the Neck. Rivers from Barrowton and the lake by Torrhen's Square flow south to the Saltspear.
A Clash of Kings
Victarion Greyjoy sails up the Saltspear in his mission to take Moat Cailin.
References and Notes