In January I adapted the Advanced Dungeons and Dragons 1st Edition Random Dungeon Generator to code, which is available here:-
This launches a container that you can run the code in via the simple instructions and make whatever sorts of dungeons you like.
Using this random dungeon generator I have made a million dungeons – all with 10 as the Periodic Check number.
So they will be quite small in general.
Here you can randomly choose one of those:-
and here you can pick your own from 0 to 999999