abstract apocalypse armageddon background blaze brimstone burning bushfire color colour danger desktop doomsday energy fantasy fear fire flame grass fire Ground Zero hades hell hot lava light nightmare powerful storm texture trouble turmoil volcanic wallpaper war amphibian animal beautiful body captivity close close-up closeup constrictor crawl creature dangerous exotic finger hand head holding macro nature pattern pet phobia predator python reptile reptilian royal scales scary serpent shed skin snake snakeskin wildlife beach dangers hut lifeguard lifeguard-towers lifeguards look-out lookout lookout-tower observation observe ocean prevent-drownings prevention protect protection safety scan scanning seashore shark-spotting shelter structure structures supervise supervision swimmers swimming tower volunteers watch alert appreciated appropriate-behavior appropriate-behaviour area black-&-white cigarettes communicating communication direction environment gray grey greyscale health health-risk no-smoking not-allowed not-permitted permission-denied pollution prohibited prohibition sign thanks unhealthy warning announcement be-careful beware care careful caution cautionary cautionary-entrance-tape cautionary-tape Dirt discarded fallen ground informing observant pedestrians plastic security tape watch-out yellow adventure art backdrop black design detail earth flow Fractal graphic grunge heat illustration image landscape liquid natural orange red render tourism vector volcano bones corpse darkness dead death deceased eerie eye sockets face fright frightening frightful halloween haunted hiding horror human pirates Remains shadows skeleton skull sleep of death smoke spooky weird white witchcraft green pink purple rainbow advice advising canine canine-guard communicate dog guard-dog information lettering letters mammal message no-entry risk risky warned wording words