Put on your thinking caps, have as many guesses as you want – and most of all, have fun. Your time starts …. NOW!
Solved by Arrowman, who correctly identified it as the visual component of a surveyor’s tripod.
I do not crop, enhance or post-edit my images in any way. Shot with a Pentax K100D, using a Sigma 70-300mm lens. F8, 1/250 sec, ISO 800, focal length 240mm.