There's a surface rabbit hole for regular rabbits, but if you follow it down, sometimes low-level rabbits have made another rabbit hole at the bottom which leads into their warrens. That's all though there's no third level.
Why not? A rabbit could feel like the hardware still too mysterious and go even deeper, making their own chips from their self sourced silicon.
Yes but getting mining helmets that are compatible with rabbit physiology but still meet OSHA guidelines is a pain. I'd recommend outsourcing to other deeper-delving creatures. Some abstractions are useful.
The only rabbit I know of that dares to go that deep is Åkesson (see Parallelogram [0])