As the name suggests, it sounds like "Mickey's junk", as Oswald refers to it when the mouse first meets him.
Oswald resides in his own private sanctuary atop the uppermost peaks, stewing in a constant reminder of his "brother's" endless success.
Also on the Mountain is the jug in which The Shadow Blot has been sealed. Oswald stays on the mountain to guard that jug and make sure that the Blot doesn't escape.
|Epic Mickey series|
| Epic Mickey | Epic Mickey 2: The Power of Two | Epic Mickey: Power of Illusion
Characters: Mickey Mouse | Oswald the Lucky Rabbit | Ortensia | Gremlin Gus | The Shadow Blot | The Mad Doctor | Yen Sid | Blotling Shadow Blot | Gremlin Prescott | Bunny Children | Animatronic Captain Hook | Animatronic Tick-Tock the Crocodile | Small Pete | Mizrabel | Blotling | Pete Pan | Spladooshes | Seers | Storm Blot | The Three Little Pigs | Magic Brooms | Beetleworx | Blotworx | Tankers | A.B.E. | Lonesome Ghosts
Locations: Tomorrow City | The Wasteland | Nautilus | Skull Rock | The Jolly Roger | Yen Sid's Tower | Ventureland | Gremlin Village | Blot Alley | Lonesome Manor | Tortooga | Floatyard | Disney Gulch | Bog Easy | OsTown | Mean Street | Mickeyjunk Mountain | Hangman's Tree | Dark Beauty Castle | Skull Island