pimeällä
Pimeällä is the adessive singular form of the Finnish adjective pimeä, meaning "dark." In Finnish, adjectives decline to agree with the noun they modify in case and number, and pimeällä is used when the related noun is in the adessive case, which conveys a location or situational context.
The adessive form -lla/-llä is used to express location "on" or "at" a surface or place, or
Pimeällä also appears in literary or figurative usage to convey mood or atmosphere, including metaphorical senses