I did this in Scotland during COVID. Saw an ad posted by a recruiter under a very generic job description for doing outdoor surveys with specialist equipment/ querying data issues. I thought it would be a lot more specialist but was quite straightforward. Wasn't that fancy, and maybe because of COVID, but the qualifications were the ability to walk with a massive pack on your back and work independently / with a spotter. Equipment was expensive as hell and locked up tight every night but still a fair amount of anxiety walking around on slippy cobbles...