Two Worlds - Secret Areas @ IGN

IGN's latest look at Two Worlds covers secret areas and offers a couple of examples along with a nice map of Antaloor:

Golem Island
Location: B12

The only way to reach this unmarked island is with a good swim. If you're not too skilled at traversing water, your best bet is to swim the channel between the northeast side of the island and the mainland since it's the shortest route.

Once on this island, you'll find it eerily deserted. Near the center of the land mass, you'll see why. A large group of iron golems, still following their orders from a master long dead, try to capture or kill anyone who steps foot here. Luckily, these behemoths are slow moving, so avoiding a confrontation with them is easy.