Dueling Peaks North cave is in the north peak of the Dueling Peaks, facing the south peak.
Cave Location
Dueling Peaks North cave is located at 1195, -1854, 0159, in the north peak of the Dueling Peaks, facing the south peak. One way to reach it is to go to Ukoojisi Shrine, then glide down to the top of the Dueling Peaks from there.
Cave Features
There are Horriblins guarding the entrance to the cave. Defeat them, and look in the northwest wall to find a hole near the ceiling. Go up it to find this cave's Bubbulfrog.
Go back down to where the Horriblins were, then go northeast into the next part of the cave. Look up at the ceiling to find a pattern.
If you have unlocked the camera, you can take a picture of the pattern for later. This is the "little twin's sign" referred to in the quest Misko's Treasure: Twins Manuscript.