I'd like to track down an English-language short story I read sometime between 1990 and 2010 approx, and which I'm fairly sure was in a UK-edition anthology.
It's about an alien intelligence (monster?) which had taken-over/mind-controlled/inhabited the mind and/or body of a female industrial worker/scientist in an underground(?) facility/lab/drilling site in Antarctica, or somewhere similarly cold and icy, while her male partner/co-worker tries to help. There's a multi-level circular shaft with some sort of machine at the top, where most of the story takes place. The time setting is now, or the not-too distant future.