These are 5 position alpha-numeric codes comprising the d series. All other level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association).
Alaska: Although Alaska enjoys a high volume of aurora activity, its cruises are not often mentioned as northern lights cruises. During the Alaska cruise season, it's rarely dark enough for the lights to be visible.
3. Reykjavik, Iceland. This beautiful area is located on the very edge of the Arctic Circle. While Reykjavik offers one of the most accessible ways to see the Northern Lights, transportation to and from Iceland can be difficult, especially during the winter season when the Northern Lights are most prominent.