The gm_flatgrass is a world by 0utsider89.
The world can be accessed with:resrec:///U-0utsider89/R-27c99edd-31f0-485c-8794-b9bd51fa5a3f
resrec:///U-0utsider89/R-27c99edd-31f0-485c-8794-b9bd51fa5a3f