76–100m - Tadpole Pens

Objectives

1. Expand base.
2. Gather Salt + Necrolei Cyst.
3. Craft Tadpole (submersible). Default crush depth 250m.
4. Travel to Tadpole Pens facility. Press red button on locked door → triggers NoA alert.
5. Recover Zip's Blackbox — Hot Cave SW of Tadpole Pens. Park Tadpole at ~240m opening; swim down to supply crate at 310m. Interact with object on crate → Kurul Level Access Key.
6. Return to Tadpole Pens, press red button → door opens. Inside: Repair Tool blueprint, ladder to upper room with NoA Terminal companion. Triggers next objective.

Blackbox signals to find

Colonist blackboxes (Anita, Chap, Ruby, Iso, Zip, Wander) drop logs that fill in the story. The full set spans the whole map — pick them up opportunistically while progressing through this tier.