You don't need to use that funicular. There's hanging electrical motor in the sawmill, you can drop that through the floor to progress.

already did that!
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1130048007
but i thought there will the key for this
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1130048906

There's that little cottage near the river. You can acces there through it's roof.

Thanks