During the periodic Elemental Invasions Princess Tempestria spawn here. * Right above the lake,there is a frozen plateau (it has the same name of the lake in-game,but sometimes people call it Soulfrost Plateau).This plateau is linked to other ice blocks and if you follow them (impossible without a flying mount since the ice blocks are separated and there is a distance between one ice block and another one) you will reach a Frozen Throne located in Winterspring.This was completely unknow before the Cataclysm expansion because flying mounts weren't available before the 4.0.3 patch and,and there is a big distance between the normal ground and the plateau.