decay decompose destroy deteriorate deterioration elements forest growth harmony instrument ivy keyboard keys life music nature piano plants weather woods background dead death decomposition ecology green leaf leaf skeleton natural recycle recycling Remains rot skeleton texture vein veins abstract aged aging brown closeup corroded corrosion crack cracked crust decomposed design grain grunge macro material obsolete old pattern planks retro roof rotten rough rustic structure structures surface textured timber uneven vintage wallpaper weathered wood wooden forestry mold mould plant porous stem tree trunk 3 ants dimensions termites