From publisher blurb:
Investigate the mining operation at Farnhurst Hollow and discover the secret to an ecological crisis below!
Silence at Farnhurst Hollow is a Fifth Edition adventure for three to seven characters of 5th to 6th level, and is optimized for five players with an average party level (APL) of 5. Characters who survive this adventure should earn enough experience to reach the 6th level.
This adventure takes place in a mine adjacent to the sea. This adventure assumes placement in the DMDave Worlds’ Dark Sea campaign setting, specifically along the southeastern shore near Ash Hallow. However, it can just as easily be placed in any campaign setting that has a rocky, humid stretch near water. This adventure can be played as a one-shot or as part of the two-part series, Chittering Mines.