Is This Image a Saucer-Shaped Impact in The Antarctic Ice?

Mystic Wanderer,
After looking at the images, for the UFO to be under the ice I think the slit would be covered up by the snow. Just look at the drift behind the slit and it's build up. I looks more recent to me. But anything is possible. 

I looked at the images and when I zoomed in, I thought to myself:

Nooo... no surely not. Is that a female-alien driver waving meekly from the hole in
the snow and mouthing the words "Er, sorry. I moved the mirror to check my complexion
and you'll never guess what happened?!"

Then I reconsidered and realising it may just be some natural phenomenon, I decided
not to put my initial thoughts down into words.

It was only moments later when I also realised I was schizophrenic and had a mean
-streak!

(Oh Lawks-a-mercy BIAD, yer' gonna take some stick for this!)

Mystic Wanderer,

I wouldn't go so far as to claim it is a "flying saucer impact", but I'm as certain as I can be that it's not merely a crevasse. Look at the edges around the hole - they are raised, not lowered. Next time you step in the mud, observe how the mud reacts around the edges of your foot as it is displaced to the outside, and you'll see what I mean.

The dimensions "matching a standard flying saucer" took me aback - I didn't even know there WAS a standardized size for flying saucers!

There IS a hole, and it appears to me that the snow was displaced upwards when it was created, rather than downward as gravity ought to pull snow when a crevasse opens up. Whther there is anything at the bottom of that hole is anyone's guess.