In The Legend of Zelda: Breath of the Wild, the Death Mountain’s Secret side quest sends Link on an exploration-focused adventure into the heart of Eldin. Hidden among the rocky slopes and treacherous paths of Death Mountain lies a mysterious secret waiting to be uncovered. Completing this quest challenges your climbing, combat, and puzzle-solving skills while rewarding you with unique items and the satisfaction of discovering one of Hyrule’s best-kept secrets.
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Death Mountain’s Secret Quest Walkthrough
How to Start the Death Mountain’s Secret Quest

To begin the Death Mountain’s Secret side quest in The Legend of Zelda: Breath of the Wild, speak with Dugby, who can be found soaking next to Grapp during the day in Goron Hot Springs, which can be found along the main road southeast of Goron City.

How to Complete the Death Mountain’s Secret Quest
Dugby, the young Goron soaking in the Goron Hot Springs, said:
“I bid a tweshure binteen gear an ba Bridge of Eldin! Iz an abazing schtick! Beely bool! If boo bind it…iz boars!”
It sounds like gibberish, but maybe there’s something to it after all?
Find the Bridge of Eldin Treasure
To find the treasure, head east along the main road until the road passes through some lava waterfalls. Instead of heading under the waterfalls, climb to the top of the mountain.

At the top, you’ll find a breakable wall at the peak.

Use a bomb to remove the debris. Inside, you’ll find a Drillshaft.
Report Back to Dugby
After finding the Drillshaft, return to Dugby and show it to him. As a reward for completing his task, he will let you keep the Drillshaft.