In fact, a study showed humans walk in circles as tight as 20 meters in diameter when they can’t see landmarks or the sun.

(https://www.churchofjesuschrist.org/study/general-conference..., ^F scientists, click ⁴ for picture; https://www.mpg.de/788272/S003_Spectrum_038-043.pdf [PDF with brief summary]; probably https://www.mpg.de/788272/S003_Spectrum_038-043.pdf [should have full article but it seems to want broken JS to download multiple PDFs so I didn’t bother])