Main Ventilation Shaft Section A

Main Ventilation Shaft Section A is part of a network of ventilation shafts on Deck Beta on the Frigate Orpheon in Metroid Prime that Samus travels through after the Parasite Queen battle in order to escape the vessel, and later is a room in the Tallon Overworld on Tallon IV. This section contains a swarm of Parasites that is most easily avoided using Morph Ball.

After the frigate crashes into the Tallon Overworld, a large portion of the room is flooded. In the unflooded portion, there is a swarm of Tallon Crabs. The flooded portion contains some Fish and a door leading to the Reactor Core.

Connecting rooms[]

Cargo Freight Lift to Deck Gamma (leading on from Subventilation Shaft Section B) (pre-crash) (via Ventilation cap)
Main Ventilation Shaft Section B (via Blue Door)
Reactor Core (post-crash) (via Blue Door)

Inhabitants[]

Tallon Crabs in the vent after the Frigate's crash.

Pre-crash

Parasites

Post-crash

Trivia[]

Main Ventilation Shaft Section A is known internally as 08a_intro_ventshaft before the crash and 08a_under_intro_ventshaft after the crash.
The Crash-Ship-MAE theme plays in this room after the frigate's crash.
How this room and the other surviving Main Ventilation Shaft rooms end up connecting to the Reactor Core after the crash instead of the Cargo Freight Lift to Deck Gamma is unclear. The door to this room in the Cargo Freight Lift to Deck Gamma is still present, although the two rooms are no longer connected.

Gallery[]

Post-crash[]

Rooms in Metroid Prime
Frigate Orpheon	Exterior Docking Hangar • Main Docking Bay • Air Lock • Deck Alpha Access Hall • Emergency Evacuation Area • Deck Alpha Umbilical Hall • Map Facility • Connection Elevator to Deck Beta • Deck Beta Conduit Hall • Biotech Research Area 1 • Deck Beta Security Hall • Biohazard Containment • Deck Beta Transit Hall • Cargo Freight Lift to Deck Gamma • Reactor Core Entrance Save Station • Reactor Core Deck Gamma Monitor Hall • Connection Elevator to Deck Beta • Subventilation Shaft Section A • Subventilation Shaft Section B • Main Ventilation Shaft Section A • Main Ventilation Shaft Section B • Main Ventilation Shaft Section C • Main Ventilation Shaft Section D • Main Ventilation Shaft Section E • Main Ventilation Shaft Section F • Biotech Research Area 2 • Connection Elevator to Deck Alpha • Deck Alpha Mech Shaft
Tallon Overworld	Landing Site • Canyon Cavern • Tallon Canyon • Transport Tunnel A • Transport to Chozo Ruins West • Root Tunnel • Root Cave • Arbor Chamber • Transport Tunnel B • Transport to Magmoor Caverns East • Gully • Alcove • Waterfall Cavern Temple Hall • Temple Security Station • Temple Lobby • Artifact Temple Frigate Crash Site • Overgrown Cavern • Transport Tunnel C • Transport to Chozo Ruins East • Frigate Access Tunnel • Main Ventilation Shaft Section C • Main Ventilation Shaft Section B • Main Ventilation Shaft Section A • Reactor Core • Reactor Access • Save Station • Cargo Freight Lift to Deck Gamma • Deck Beta Transit Hall • Biohazard Containment • Deck Beta Security Hall • Biotech Research Area 1 • Deck Beta Conduit Hall • Connection Elevator to Deck Beta • Hydro Access Tunnel Great Tree Hall • Great Tree Chamber • Transport to Chozo Ruins South • Transport Tunnel D • Transport Tunnel E • Transport to Phazon Mines East • Life Grove Tunnel • Life Grove
Chozo Ruins	Transport to Tallon Overworld North • Ruins Entrance • Main Plaza • Nursery Access • Eyon Tunnel • Ruined Nursery • Save Station 1 • North Atrium • Ruined Gallery • Map Station • Totem Access • Hive Totem • Transport Access North • Transport to Magmoor Caverns North • Vault Access • Vault • Plaza Access • Ruined Shrine Access • Ruined Shrine • Tower of Light Access •Tower of Light • Tower Chamber • Ruined Fountain Access • Ruined Fountain • Meditation Fountain • Magma Pool • Training Chamber Access • Training Chamber • Piston Tunnel • Arboretum Access • Sunchamber Lobby • Sunchamber Access • Sunchamber • Sun Tower Access • Sun Tower Arboretum • Gathering Hall Access • Gathering Hall • Save Station 2 • Watery Hall Access • Watery Hall • Dynamo Access • Dynamo • East Atrium • Energy Core Access • Energy Core • Burn Dome Access • Burn Dome • West Furnace Access Furnace • East Furnace Access • Crossway Access West • Crossway • Crossway Access South • Elder Hall Access • Hall of the Elders • Elder Chamber • Reflecting Pool Access • Reflecting Pool • Antechamber • Save Station 3 • Transport to Tallon Overworld East • Transport Access South • Transport to Tallon Overworld South
Magmoor Caverns	Transport to Chozo Ruins North • Burning Trail • Save Station Magmoor A • Lake Tunnel • Lava Lake • Pit Tunnel • Triclops Pit • Storage Cavern • Monitor Tunnel • Monitor Station • Transport Tunnel A • Transport to Phendrana Drifts North • Warrior Shrine • Shore Tunnel • Fiery Shores • Transport Tunnel B • Transport to Tallon Overworld West Twin Fires Tunnel • Twin Fires • North Core Tunnel • Geothermal Core • Plasma Processing • South Core Tunnel • Magmoor Workstation • Workstation Tunnel • Transport Tunnel C • Transport to Phendrana Drifts South • Save Station Magmoor B • Transport to Phazon Mines West
Phendrana Drifts	Transport to Magmoor Caverns West • Shoreline Entrance • Phendrana Shorelines • Save Station B • Ice Ruins Access • Ice Ruins East • Plaza Walkway • Ruins Entryway • Ice Ruins West • Canyon Entryway • Phendrana Canyon • Temple Entryway • Chozo Ice Temple • Chapel Tunnel • Chapel of the Elders Courtyard Entryway • Ruined Courtyard • Save Station A • Specimen Storage • Research Entrance • Map Station • Hydra Lab Entryway • Research Lab Hydra • Observatory Access • Observatory • Save Station D • West Tower Entrance • West Tower • Control Tower • East Tower • Aether Lab Entryway • Research Lab Aether • Research Core Access • Research Core • Quarantine Access • North Quarantine Tunnel • Quarantine Cave • Quarantine Monitor • South Quarantine Tunnel • Transport to Magmoor Caverns South Transport Access • Frozen Pike • Pike Access • Frost Cave Access • Frost Cave • Save Station C • Upper Edge Tunnel • Phendrana's Edge • Storage Cave • Security Cave • Lower Edge Tunnel • Hunter Cave • Lake Tunnel • Gravity Chamber • Chamber Access • Hunter Cave Access
Phazon Mines	Transport to Tallon Overworld South • Quarry Access • Main Quarry • Save Station Mines A • Security Access A • Mine Security Station • Security Access B • Storage Depot A • Elite Research • Research Access • Ore Processing • Elevator Access A • Elevator A • Storage Depot B • Waste Disposal Elite Control Access • Elite Control • Maintenance Tunnel • Ventilation Shaft • Control Room • Omega Research • Map Station Mines • Dynamo Access • Central Dynamo • Save Station Mines B • Quarantine Access A • Metroid Quarantine A • Elevator Access B • Elevator B Fungal Hall Access • Fungal Hall A • Phazon Mining Tunnel • Fungal Hall B • Missile Station Mines • Quarantine Access B • Metroid Quarantine B • Save Station Mines C • Elite Quarters Access • Elite Quarters • Processing Center Access • Phazon Processing Center • Transport Access • Transport to Magmoor Caverns South
Impact Crater	Crater Entry Point • Crater Tunnel A • Phazon Core • Crater Missile Station • Crater Tunnel B • Phazon Infusion Chamber • Subchamber One • Subchamber Two • Subchamber Three • Subchamber Four • Subchamber Five • Metroid Prime Lair
Unused	Engine Room • Reactor Room