GURPS O'Neill Cylinder Design

[Anthony]

Originally Posted by cptbutton

Put a layer of factory farms under the main land surface. More production, upper land freed for parks, radiation shielding. Yeah you get some mutated crops or animals, but what could go wrong?

How are you getting light to your farms?

In general I would not recommend trying to emulate a classic O'Neill cylinder and instead design an O'Neill-inspired cylindrical habitat, there are some known issues with the classic O'Neill cylinder.