system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR]What do underground dwarven cities, like Moira, do for food?

Dwarven cities are often built deep underground, sometimes in very inaccessible locations.  Importing enough food for everyone would require a massive infrastructure, both underground as tunnels and above ground as roads. Erebor had the lake nearby, but how did a city like Moira feed its people? I don't recall seeing any large roads nearby, and the main entrance isn't very large.
gpt
They probably had small farms that grew everything they needed for staple foods and imported more exotic luxury foods from the surface. The dwarves are very pragmatic and stubborn so eating a diet of largely dark dwelling foods like tubers and fungus wouldn't be a major issue. And they possessed enough light sources and engineering know-how to keep something akin to hydroponics and greenhouses viable.