road_sand.rgb -> Copyright © 2009 Marianne Gagnon (Auria) CC-BY-SA
rock{1,4}.rgb -> based on http://gpl.imageafter.com/image.php?image=b20rock021.jpg GPLv2 modification © Christoph Egger
sky2.rgb -> © Christoph Egger Zlib License
road_sand_side.rgb -> based on road_sand.rgb
						-> wall © common_media_projects -> users -> leadgolem -> textures_only
						-> grass © Christoph Egger data/textures/grass2.rgb zlib
						-> yellow line © Christoph Egger
						-> rock4.rgb
