The Korean Legend of Dan Gun
http://efl.htmlplanet.com/korean_origins.htm

There are two versions. Both versions agree on Dan Gun's pedigree. He was begotten by his father, Hwan-ung, son of the god Hwan-in. Nothing is mentioned about the origins of Hwan-in. Version 1:

One version says the heaven and earth were one, and all animals could communicate with humans and gods. Hwan-ung wanted earthly rule, so his father, Hwan-in sent him to earth to gain his desire. With him, Hwan-ung took the lower-level gods of Wind General, Rain Governor, and Cloud Teacher. (I personally think that "master" is probably a better translation over "teacher"). Also, Hwan-ung took three thousand other lower-level gods. (probably as servants and/or soldiers). Version 2:

The other version say that the gods were living on earth and Hwan-in sent his son, Hwan-ung to the East to establish a new country/kingdom. With him, Hwan-ung took three thousand "followers" (probably lower level gods). Also, he took Lord of Wind, Master of Rain, and Master of Clouds. From thereon, the two versions pretty much agree...thusly:

Hwan-ung and his entourage is reported to have settled at Tae Baek Mountain (which is in what is currently known as North Korea). Hwan-ung met a tiger and a bear who "prayed" to become human. Hwan-ung proposed a test, which if completed would make the contestant a human. The tiger and bear (both female I guess, 'cause you'll see why later), were given wormwood and twenty cloves of garlic and told to stay out of the sunshine (in a cave) for 100 days. The tiger could not endure. The bear did endure, and after 100 days, became a human (woman). The woman was lonely. And prayed for a mate. So, Hwan-ung took her as a wife, and Dan Gun was born as a result of their union. Dan Gun is said to be the progenitor of the Korean race. Source: (oops! it would appear that I've lost the source).

It should be noted that Version 2 (of the legend of Dan Gun) gives another name for the mountain besides "Tae Baek" (which would be Sino-Korean, Tae being (Great) and Baek being (White). The other name of the Mountain is "Myo Hyang" Mountain, which sounds very "Pure" Korean to me, and may be the pure-Korean name of the mountain that I have been looking for.

Incidentally, it is the tallest mountain on the Korean peninsula, if that means anything to you (it does, to me).