- "Dugby, the young Goron soaking in the Goron Hot Springs, said: "I bid a tweshure binteen gear an ba Bridge of Eldin! Iz an abasing schick! Beely bool! If boo bind it... iz boars!" It sounds like gibberish, but maybe there's something to it after all?"
- — Side quest description
Dugby is soaking underwater when he speaks to Link, causing his speech to be garbled and sound like gibberish. However, if Link returns to the Hot Springs at night, Dugby will be on land sleeping and Link can hear him talking in his sleep and giving clues such as "The treasure...at the top of a lava waterfall..." and "Treasure... the way to Bridge of Eldin... an amazing stick...". Both clues together reveal that the treasure is located atop the lava falls along the path leading from the springs to the Bridge of Eldin. Link must head the top of the path middle lava fall, then search around the nearby small peak for a Weak Wall destroyable with Remote Bombs or certain melee weapons capable of breaking Ore Deposits in a single hit. After breaking down it, Link will find a Drillshaft behind the wall.
Link must then return to the Hot Springs and show the Drillshaft to Dugby to complete the side quest. If Dugby is sleeping, Link must wait for his awakening. Once Link says he found it, Dugby reveals that he had hidden the Drillshaft, and once checked, he eventually figures out that Link was responsible for the noise he heard when he was breaking down the wall.
Dugby is impressed and allows Link to keep it. If the Drillshaft breaks, it will occasionally respawn in the same place and Link can grab the new one. It is only found once in a Treasure Chest so it is possible to obtain it before starting the quest. The Drillshaft acts as the reward for completing this side quest. It is a Goron spear and like all Goron weapons, it can break Ore Deposits and Breakable Walls with one hit.