This is a basic compact spawn I build for a customer in 2019, included a free to download schematic.
The map includes an enclosed environment, detailed walls, an inner circle, a few detail chambers/rooms and its it detailed build overall like I used to these days.

Didnt check this buid for faults/errors etc so there could be block errors (sorry in advance), it's free to use, do whatever you please with it.

Cheers.