.I think you could get busted in St. Louis for this 50 years ago. Whatever it is was designed by local mad genius Bob Cassilly. He's the guy who runs our very odd but fascinating City Museum. Best I can figure out is that he designed the area in this photo as a bizarre little park on a bike trail along the Mississippi, through the industrial badlands north of the Arch. These two are prominent residents.
Is this love, sex, communication or what? Actually, it kind of reminds me of a mother bird regurgitating food to its baby.