Yehimal Mountains

The Yehimal, a name meaning "Rock-Snow", or the Mountains of Snow, and sometimes called the Yehimal Mountains, was an immense mountain range dividing the three continents of Zakhara, Faerûn, and Kara-Tur, and between them the Hordelands. They were famed as the largest, highest, most extensive, and indeed greatest mountain range in all the known lands of Toril.

Geography
The mountains formed the primary barrier between Faerûn, Kara-Tur, and Zakhara.

The Yehimal comprised multiple lesser mountain ranges and branches:
 * The World Pillar Mountains or Jibal al-Akbas in Zakhara
 * The Wu Pi Te Shao Mountains in Kara-Tur

History
According to dwarven legends, the Yehimal was the site of the very first dwarf settlements on Toril, founded some tens of millennia before the 14th century DR, that is, around −16,000 DR. Scholars estimated that they later made a great exodus out of the Yehimal, migrating into the continents of Faerûn, Kara-Tur, and Zakhara and dividing into two or three major branches. The ones who ventured north into Faerûn are theorized to have made their first settlements under the lands that would be known as Semphar, before spreading westward. By −15,000 DR, they'd already founded their first great kingdom, Bhaerynden, beneath the Shaar.