Pilot the survey submersible through the bioluminescent chasm.
SONAR reveals nearby lantern specimens — fly into them to collect. Collect 10 lanterns, then reach the escape shaft at the end of the cave.
Green vents refill oxygen. Rock spires and rough flying wreck the hull.
W thrust · S brake · mouse steer · A/D · ↑↓←→ steer · SPACE sonar · click for mouse-look