Island

The Island is at the midpoint of the Sea.

Geography
The Island is pitched in perpetual twilight, the Sun and Moon staying below the horizon the entire year.

It is always brighter in the direction of the Sun, and this brightness can be seen making a complete circle every 24 hours.

There is a clear natural spring in the exact center of the Island, a wide and deep sinkhole, feeding fresh groundwater into the soil, making the Island a true oasis in the salty inner sea.

Aether
The Aether is thin and feeble, and wizards cannot get a grip on its subtle fabric, failing to perturb its structure and compel phlogista to imbue. Also Enchantments and Wards are completely ineffectual.

Alchemical effects, on the other hand, do continue to work, and can even be prepared on the Island, so intrinsic Form and Substance are unaffected by whatever force reduces the Aether.