Map Request (Simple to make)

Hi, could someone generate a new, random world and MCedit or WorldEdit a 1000x1000 Bedrock wall around it? The wall should go from Layer 1 to 256, and there should be no roof. Just a 1000x1000 bedrock wall.

I didn't know where to post this, if it's in the wrong section could someone direct me where to put it

Me and my friends are doing a survival map but we need boundaries, if anyone makes this I will appreciate it and subscribe them. Thanks