Where is the Missile Expansion in Storage Cavern (Metroid Prime Origins)?

The Missile Expansion is in Storage Cavern, Magmoor Caverns. To get there you need Missile Expansion, Morph Ball, Morph Ball Bomb, Varia Suit first (starting a new game).

What you need first

Starting a new game from Landing Site, get these first, in this order, then go to Storage Cavern (42 rooms in all):

1. Missile Expansion in Landing Site (0 rooms; needed for Missile Expansion (Missile))
2. Morph Ball in Ruined Shrine (9 rooms; needed for Missile Expansion (Morph Ball))
3. Morph Ball Bomb in Burn Dome (13 rooms; needed for Missile Expansion (Morph Ball Bomb))
4. Varia Suit in Sunchamber (10 rooms; needed for Missile Expansion (Varia Suit))

Last stretch

From Sunchamber, door by door:

1. Sunchamber: go through the door to Sun Tower Access → Sun Tower Access
2. Sun Tower Access: go through the door to Sun Tower → Sun Tower
3. Sun Tower: go through the door to Transport to Magmoor Caverns North → Transport to Magmoor Caverns North
4. Transport to Magmoor Caverns North: take the elevator → Transport to Chozo Ruins North assumed
5. Transport to Chozo Ruins North: go through the door to Burning Trail → Burning Trail
6. Burning Trail: go through the door to Lake Tunnel → Lake Tunnel
7. Lake Tunnel: go through the door to Lava Lake → Lava Lake
8. Lava Lake: go through the door to Pit Tunnel → Pit Tunnel
9. Pit Tunnel: go through the door to Triclops Pit → Triclops Pit
10. Triclops Pit: go through the door to Storage Cavern → Storage Cavern

More Missile Expansions

• Missile Expansion (Burn Dome)
• Missile Expansion (Crossway)
• Missile Expansion (Dynamo)
• Missile Expansion (Dynamo)
• Missile Expansion (Furnace)
• Missile Expansion (Gathering Hall)
• Missile Expansion (Hive Totem)
• Missile Expansion (Main Plaza)
• Missile Expansion (Main Plaza)
• Missile Expansion (Main Plaza)
• Missile Expansion (Ruined Fountain)
• Missile Expansion (Ruined Gallery)
• Missile Expansion (Ruined Gallery)
• Missile Expansion (Ruined Nursery)
• Missile Expansion (Ruined Shrine)
• Missile Expansion (Ruined Shrine)
• Missile Expansion (Training Chamber Access)
• Missile Expansion (Vault)
• Missile Expansion (Watery Hall)
• Missile Expansion (Watery Hall Access)
• Missile Expansion (Fiery Shores)
• Missile Expansion (Triclops Pit)
• Missile Expansion (Elite Control Access)
• Missile Expansion (Elite Research)
• Missile Expansion (Fungal Hall Access)
• Missile Expansion (Fungal Hall B)
• Missile Expansion (Main Quarry)
• Missile Expansion (Metroid Quarantine A)
• Missile Expansion (Metroid Quarantine B)
• Missile Expansion (Phazon Processing Center)
• Missile Expansion (Security Access A)
• Missile Expansion (Frost Cave)
• Missile Expansion (Gravity Chamber)
• Missile Expansion (Ice Ruins East)
• Missile Expansion (Ice Ruins East)
• Missile Expansion (Phendrana Shorelines)
• Missile Expansion (Phendrana Shorelines)
• Missile Expansion (Quarantine Monitor)
• Missile Expansion (Research Lab Aether)
• Missile Expansion (Research Lab Hydra)