It might look like some sort of portal but it seems like it is some sort of one-way portal as anything that passes through it, does not lead anywhere as it didn't reach what world is beyond the portal. I tried throwing a pebble when I saw it but the portal seems to be nonexistent since the pebble just passed through it.
"What the heck is this? I thought it was some sort of a portal but it doesn't do anything. I don't want to risk my body either since, unlike the game where I can regenerate my lost limb, in the real world, I will lose it permanently. Even if it is proven that it doesn't have any portal traits, doesn't mean it doesn't have one."
Being cautious is not a bad thing and it always proves to save me countless times. So if my instincts kick in like this, I would rather follow my instincts rather than follow my curiosity.
