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Hjaalmarch is one of the nine Holds of Skyrim. The seat of power is Morthal.

This hold is divided evenly between wind-swept tundra dotted with farms and a huge, stinking salt marsh. There is little of interest here, save perhaps for the hold's capital, Morthal.

Jarl Idgrod Ravencrone has been cooperative enough with the Empire in the past, but will ultimately look out for her own interests [sic] if put in a difficult position.

While the hold offers minimal strategic value to the Empire, it would make an ideal staging ground for a Stormcloak siege of Solitude, and so must be held against the enemy.