The foreground used in world 1 in Yoshi's Island. It comes with the two palettes seen in game.
UPDATE: Now includes all rocks seen in the original game, sand blocks, and some core objects to complement the tileset.
NOTE: You need to use the Slope Edge Fix Block in order to use the rocks properly, since they have a direct instant dropoff from a slope. You'd also need to use the Crumbling Block to use the sand blocks properly (the map16 is already ordered to use this in conjunction) and of course the Donut Lift (included in PIXI).