I think that it's an abstract pixelated representation of four different biomes from the game minecraft put side by side. He or she uses the same colours as the ones visible when you play in these biomes.

Interesting colors.

What exactly is this, though? This wont get accepted through - keep the experiments to yourself, they're not meant for this gallery. We are looking more for refined works, this is just unrefined pixel clusters scattered randomly. 

Don't mean to offend you, and if they're is something I don't see let me know. Hope ya understand. :)