Flight from Fallston (2016)

Publisher's blurb:

For over a year you heard the horns in the mountains, but they were too distant and faint to be of great concern. There was war amongst the humanoids who lived there, but that was not rare. Sure, there were raiding parties from time to time. A missing cow here or a burned outlying farm there, but they seldom came near the village walls—until today.

Flight from Fallston is a 2-hour Forgotten Realms adventure for 0-level characters. The adventure takes place in an area between the Sword Coast and Amn, near the northern side of the Cloud Peaks, but you can move the adventure to any mountainous region in Faerûn without trouble.