"Ori brought kindness and hope to his heart."—Spirit Tree, after Ori helps Gumo
Gumo's Hideout is an area in Nibel where Gumo lives in a house, which is a part of Moon Grotto. It is a dark cave with glowing mushrooms, roots, and waterfalls, and contains many moving contraptions such as moving pillars and spikes (possibly made by Gumo). The area contains Leru's Ancestral Tree, which gives Ori the ability to Double Jump. It also contains the first "mid-boss" fight and a sequence involving a rock slide.
Gumo lived in his hideout during the time that the forest was blind. When he obtained the Water Vein at the Ginso Tree and has been spotted by Ori, he ran with the orb to his hideout while Ori chases after him. When Ori reached the bridge right above Gumo's hideout, Gumo activated the bridge trap, sending Ori down to the bottom of his hideout.
Ori dodged through many contraptions and traps as Gumo ran from them, activating traps along the way. At the last trap, Gumo attempted to pull the lever to activate the rock slide, but the force of pulling the lever knocked him off backwards and hit a wooden pillar behind him, causing a boulder to trap him at his feet. As Ori dodged through the rock slide trap and finally reached Gumo, the spirit showed kindness by freeing him from the boulder. Gumo apologized by giving Ori the Water Vein.