That sound was recorded in Mai 2016 inside an old watermill house in Bavaria, where the old waterwheel still drives a wooden gear with cogwheels. Originally that watermill had several purposes like hammering, sawing, pressing oil from different fruits or producing paper.
在老Watermill裡面的木齒輪
聲道：2
類型：wav
recorder、external、pocket、mic、field-recording、stereo
錄音機、外部、口袋、小、現場記錄、立體聲
資料來源：freesound ( https://freesound.org )