Looking at the "street view", it seems they had some sort of robot on treads taking shots with a camera. Seems reminiscent of some of the mars rovers.

I see the shadow of a human wearing a backpack. Some of the photos have hair in them.

Haha, yes some sort of "robot" - it's a humanoid carbon unit with a backpack :)

If you 'look' straight down, you'll get your answer (the top of someone's head gives the game away!)