Tip: You can use Lunar Magic's Overworld Layer 3 Editing system to edit or create your own layer 3 images (castle bricks, fish, rocks) and apply unique effects per level via the Layer 3 Bypass in the main editor.
The background used in various field and bridge levels of Ganbare Goemon 2, from Super Famicom. I removed some mountains and clouds, because it was using a lot of colors from the palette. I've included the original HDMA with this file.
Could be used for some "fields", grassland levels.
It uses the BG2 and BG3 slots. Also, it uses palette 3 and 4.