 One of the more exotic features of Sinai is that there are several "islands" which float upon the air, borne by unknown means, following unpredictable routes across the sky which are not necessarily determined by the winds. The largest and best known of these is Rephidim, which, until recently, was the only one widely known to be populated. Other sky islands of note would include: Paradys, Tarsus and Fetiss. Although the sky islands tend to hover around 10,000 feet ASL, they sport localized phenomena that cancel out, to some degree, the very low air pressure that would be associated with such altitude. For this reason, the differences in air pressure often result in small atmospheric variances, such as clouds of mist which accompany the sky islands. There is much disagreement about what governs the movement of the sky islands. For all intents and purposes, it appears that they are random. However, the Captain-Astromancer has long been held to be able to predict the course of Rephidim's movements, and there have been whispers among some circles of some sort of connection between the movements of the sky islands and that of celestial bodies.
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