the texture of gray earth

abstract ancient backdrop background backgroundbluestonegravelstone bitumen black brown clear closeup concrete construction design detail dirt earth element erosion geological gravel gray grey ground grunge image limestone material mountain natural nature naturestonebackground old outdoor pattern patternbluestonegravelstone pebble photobluestonegravelstone picturebluestonegravelstone rock rough sand seamless soil stock stone structure surface texture textured vintage wall wallpaper weathered