Mount Sternum

Mount Sternum is a mountain located north-east of Thais and south-west of Kazordoon. It is home to many wild creatures such as Cyclopes and ghouls. This was once the only path from Thais to the rest of the continent but now a southern road bypasses the mountain. Some adventures and quests can be found deep within this mountain. This is a very good hunting place, you can advance 10,000 experience in only 20 minutes. There is also a dragon lair at the deepest floor.
Graveyard of the doomed with interesting inscriptions can be found deep under Mount Sternum.
Watch out so you don't get surrounded by the Cyclops Smiths when at low levels. It can be your death. If you don't have to travel long distances, you can activate Magic Shield to pass them safely.
Mount Sternum was revamped in an update adding larger underground caves and Cyclops Drones/Cyclops Smiths.