The underground air pressure in this area is such that you can walk into the undersea waters of the Sea of Mourning. Some of these openings to the sea are along walls where you have to walk or climb up to them. Some of these areas have ramps or stairs ascending up to them. These were made over thousands of years by sahuagin raiders coming out of the undersea canyon Burrogral. From Okaaz Piin, the sahuagin raid the frontiers of Zoethall and Qya-Qhar.