We forget, with the advent of digital photography, how pivotal access to a darkroom used to be for all sorts of endeavours.
Facility for developing Black and White photos is not very complicated. Usually you just need an enlarger, some chemical tanks and a room with no light. If you want to do slides (rather than prints), and use the right film, it's even simpler as you just need to develop the film.
Yeah I'm about to setup a darkroom in my bathroom. I already develop myself but I want to get into printing. Doing that on the go during an Antarctica exploration seems like a pain in the ass though.
It's simpler with slides because you skip the print process, but developing slide isn't nearly as easy as b&w. It's 10+ steps process [0] and temp is critical vs 3 steps for b&w. You can also make slides from b&w film if you're adventurous: https://www.bhphotovideo.com/explora/photography/tips-and-so...
As in photographic darkroom ?
edit: yes, https://books.google.de/books?id=vNsDAAAAMBAJ&pg=PA494&lpg=P...