They obstructed my view of Venus. Luckily, I happened to have a spare Illudium Q-36 Explosive Space Modulator handy.
I don’t know what they were intended to be; it’s possible you have it right, but those things don’t–to my knowledge–appear in pairs like that in, um, Nature. Could have been totems for the dreaded Double Inverted ‘T’ cult.
I suspect that whatever those were are tame compared to what we’ll see when this is Opened to Ye General Publick.