One branch of the first dwarven migration into Faerûn settled in the Novularond mountains and later became known as arctic dwarves..
A time gate was hidden inside the glacier. It was, according to a legend of Mystryl, "north of Novularond, shining bright upon Misken's Peak at Highsummer." However, the Great Glacier knocked the top off Misken's Peak many centuries before the 7th century DR, so it could not be found even after repeated efforts by adventurers to find it. The portal survived but was buried deep inside the glacier and was slowly carried along with it.