The King of Pyropuff Peak
From the Super Mario Wiki
The King of Pyropuff Peak is the 10th course of Episode 1 in Captain Toad: Treasure Tracker. This level takes place inside a volcano called Pyropuff Peak. To unlock this stage, the player must have collected at least 12 Super Gems.
Captain Toad must climb to the top while avoiding Draggadon's fire and the lava that rises when Captain Toad reaches certain parts of the level (which prevents him from back-tracking). When he reaches the top, the platform with the Power Star falls onto the dragon, putting it unconscious, allowing Captain Toad to take the Power Star from atop its head.
A hidden 8-bit Luigi can be found on the wall to the left of the Power Star pillar. (This can be seen from a platform directly across from the pillar.)
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