The umm... feature in that scene would be about a kilometer in diameter. If these were Martian Banyan trees, they would be a about 6x larger than some of the Earth variety. I'm struggling to maintain my scientific scepticism here, so maybe it's just a peculiar ice formation. Mars is just plain wierd, it has a lot of mysteries.
Trees on Mars?
On this site, a geologist says it could be some kind of radial drainage pattern. D@mn peculiar!
Are there Trees on Mars?