crack crevice earth formation geological geology granite limestone natural nature piedra rock rocks rough sandstone slate stone stones texture textures ancient background bouldering cobble cobbled cobblestone massive old pathway pavement rural solid street structure structures bad bentheim bentheim castle castles germany old wall stone wall stones decay urban decay wall architecture brick bricks color coloured colourful connection distance light long ochre pastel perspective tunnel circle concept culture deco decoration design hag helix illustration pattern sorceress textur tile tiles witch wood wooden brickwork building masonry material medieval middle ages glitter green green&red pebbles red red&green small wallpaper