Walnot Mountain Cave is in the Mount Lanayru area.
Cave Location
Walnot Mountain Cave is located at 4218, -1737, 0196, which is southeast of Mount Lanayru Skyview Tower, near Jikais Shrine. It has another entrance at 3932, -2070, 0128.
Cave Features
Near the northeast end of the cave, you will see a Boss Bokoblin and some Bokoblins.
From the northeast entrance, go to the area down below, defeat the Ice Like and go southwest to find this cave's Bubbulfrog.
Misko's treasure is in a tunnel near another Ice Like, halfway between the two exits of the cave (see Cave Location for details). Look northwest from the Ice Like to see it. Melt the ice that the treasure chest is frozen in. For example, place wood and flint next to the ice and hit the flint with a metal weapon, or fuse a ruby to a weapon and equip the weapon and stand near the ice, or throw fire fruit at the ice. The chest contains the Barbarian Leg Wraps.