Coldarra is a large island on the west coast of Borean Tundra which is completely surrounded by rocky mountains covered in ice.

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Coldarra, Borean Tundra

Coldarra is home to the Blue Dragonflight and there base, the Nexus however the Red Dragonflight and the Kirin Tor have a base, Transitus Shield.

The Blue Dragonflight first adopted Coldarra as there main home when Deathwing attacked there main base in Dragonblight. After that Coldarra was separated from the rest of Northrend to keep other people away so they could begin recovering.