Mt. Olympus
Mt. Olympus, also known as Mt. Thulbane, is a massive, singular mountain (it is not part of any clear range) in northern Threskel, just east of modern-day Chessenta. It rises to almost 30,000 feet above the level of the Sea of Fallen Stars, or 28,750 feet above nominal ground level. Because of its incredible height, and the lack of any competing mountains in the vicinity, it is visible from as far away as Messemprar and southern Aglarond; its impressive stature has been often attributed as a primary cause of the mysticism surrounding it through the ages.
It is believed to be the domain of the Olympian Pantheon, currently venerated only in Chessenta and Threskel, and is the site of dozens of temples, tombs, and holy sites, most of which are off-limits to all but the elite Ephor class of Threskan society.
Mt. Olympus can be climbed; it's southern face is easy to ascend, and is paved with ancient stones and stairways for most of the ascent. Beyond about 10,000 feet, even seasoned climbers will struggle in the thin atmosphere and the freezing temperatures. Despite this, there are structures that have been spotted and even reached through magical aid at above 20,000 feet.
It is said that at its summit, there is a golden staircase leading to its spiritual ascent, to the true domain of the gods, that can be seen only by the faithful. This modern legend is thought to have arisen after the 1354 DR expedition by Aznar Thrul and company to the summit, after which it was reported that the summit contains only snowy rock, and no gods to be found. Many discredit the Thayan explorer, and insist that the summit remains the physical dwelling place of the Olympian gods.
The slopes are known to host many unique monsters and creatures not seen anywhere else. These creatures are said to be the guardians of the gods, and will attack the faithless without remorse. In many cases, these creatures have been "tamed" by the Ephors; many are constructs created by that class to ward away tomb robbers and those who would defile their holy places. Many creatures still are not unique in general, but the mountain hosts unique strains of their kinds, such as the Olympian harpies, who wield a form of storm magic well beyond most of their kin.