Which dens give which raid is datamined, sort of. We don't know which internal id corresponds to which den in-game.

https://www.serebii.net/swordshield/maxraidbattles.shtml

There are pages for each den.
Autists, can we make a map of the wild area?

Attached is what we know so far. Contribute more as you find them.

Important ones:
- 66 is the one and only ditto den. Wishing pieces seem to have a chance to give things outside of the datamine, but everything in the datamined list at a particular den can be gotten there.
- 23 is a popular one for snom / darumaka

Mechanics: It is possible to spawn lower-star versions of raids based on your progression. Shortly after gym 3 was able to spawn a 3-star frosmoth from den 23, though the datamine suggests that only 4star and 5star should be possible. This means that any raid in the datamine can be spawned as soon as you are able to reach the den.

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