The Dead Tree of Ranchiuna (HP)

Seven or eight minutes after passing gate #2, a flashback will occur in a kitchen. A few minutes after getting back on the "normal" path, a large make-shift shack will come into view. The path then bears left, although you can circle the shack if desired. A minute or so later a second large shack comes into view, there will be a few raindrops and the achievement will unlock. If a visual is needed, see Cheetah's video at 28:37.