Great Lake

The Great Lake is a large, inland sea that lays in the centre of the Eastern Realms. Several shipping routes run across the waters from the most important ports here. The ports of Merridan, Vertigen, Uryledo, and Eveasson regularly process ships carrying whatever they transport, be it people, cargo, animals or something else.
Most ships travel via determined shipping routes, partially so that they can travel in convoys to scare off whatever beasts and monsters live below the waves. Still, attacks can happen, and many a captain has experienced at least one attack in their life by Sahuagin, wandering Water Elementals, or far, far worse.
There is one thing that all ships avoid: The Lone Tower in the middle of the Great Lake. Around the foundingof the College of Eveasson towards the end of E1, attempts were made to enter the Tower itself. Many things prevented the Tower's exploration, however. Ships heading to the Tower got lost or disappeared with all hands in suddenly appearing fog, wizards flying there using Fly spells crashed to their doom into the waves whenever they got close, and a particularly brave and bold (read: foolish) band of gnomes attempted to tunnel to the Tower from an island relatively close by, and were never seen again. The Council of Wizards soon put a stop to the exploration attempts, arguing that whatever the tower protected was far too dangerous to be investigated.