|Hydra Lab Entryway|
The tunnel, as seen from the Research Entrance door
Hydra Lab Entryway is a room in Phendrana Drifts in Metroid Prime. It is an enclosed tunnel, square at either end and round through the centre. Near the Research Entrance door, there are some metal structures and a couple of vents emitting a gas into the tunnel. Once the Thermal Visor has been collected, the lights go out, immersing the room in near-total darkness.