 The largest of the sky islands on Sinai is Rephidim, which houses a sizeable city of the same name. The city of Rephidim is dominated by a theo-bureaucracy based in the Temple, its emblem being that of the Star and Anchor. Rephidim is the most technologically advanced of any of the known Sinai cultures (even more so than Chronotopia), largely due to the fact that magic is suppressed by approximately 75% (by most measures) here, and that technology is more reliable than down on the surface of the world. Even so, Rephidim has very close ties with the College Esoterica and the Mages' Guild, and has much wider access to the use of magic than any other nation or city-state on Sinai. While Rephidim is a bustling city, it is also home to well-entrenched corruption and crime. The seediest portion of the city is referred to as Darkside, and is almost a city unto itself. The underside of the sky island (simply known as "Underside") is home to some settlements of fliers who enjoy somewhat less intrusion into their lives by the authorities of Rephidim Temple ... and consequently, quite a bit of criminal activity takes place here as well, on the "flip side". At an altitude of 10,000 feet ASL, the air is thin and cold ... but due to a localized phenomenon, the atmosphere immediately around and beneath Rephidim is breathable and of a moderate temperature. In essence, the area around Rephidim is a permanent weather front, and its arrival as it meanders across the continent of Ai is often heralded by storms on the surface.
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