Medaevum

The Northern Kingdoms, as this land was once known, are no more. The first thing that returning Alterans discovered is that the land has sunken in places, the sea risen in others, and the landscape has been torn apart by unfathomably powerful forces.

They could have reasonably expected to be challenged upon their arrival. They left with the understanding that Shoreless Gulf and the Sea of Storms were on the precipice of being embroiled in a fight that would take decades or centuries to resolve.

Only, upon their arrival, there were no titanic elementals. No vast storms. No roiling seas. What's more, there were the ruins of a civilization that must have persisted through the desolation of the landscape.