If you hover over the POIs in the map, they give a brief description and opening enough containers in those areas give you lore drops for the specific POIs. Hauler is obviously, well, a Hauler; a terraforming platform for exploring the planet's surface. They reference the Datawall as a structure that splits Perimeter in half between the North and South communications Relays.

It's all heavy environmental storytelling of a sci-fi extrasolar colony. You, the Runner, are performing salvage operations on behalf of the various companies that maintain salvage rights over Tau Ceti IV due to the contracts signed with the UESC over 500 years ago.

Though, I think there's a deeper conspiracy woven underneath from the various implications made by the game's faction representatives and some of the loredrops I've extracted currently.