ot real, but where is the shape from? Is it just ma

Each side (except maybe not the bottom) has small disconnected 'islands' so it wouldn't be land-locked.

That split on the north east looks like a rather deep river. Makes me think volcanic. But most of the recent volcanic islands don't have smaller islands like that around them. Puts me more in the mind of something around the Philippines. It could be something from a high resolution map showing more islands.

I rotated and flipped it every which way, fed it back through tineye and google images, nada. I guess is that it was a collection of islands merged together, or a fictional art piece.

It looks like Antarctica to me, but I'm too lazy to check.