arrow board canada colour conifer danger fire flammable forest indicator inflammable notice risk sign tree warning wood background beautiful black bonfire burn burned burning dangerous design element energy fiery fireplace flame flames heat hot abstract art ashes blaze brick bright comfortable cozy firewood flaming home light log orange blank box brown close-up equipment group of objects isolated Isolated Objects macro match matchbox Matchstick Objects/Equipment open stick togetherness white closeup explode fuel hell horror ignite ignition inferno man raging shadow warm wildfire yellow advice alert appropriate-behavior appropriate-behaviour avoid be-careful care careful caution communicating communication concern gas gaseous natural-gas no-ignition outlet potential red risks risky safety signs stay-clear vapour vapours warned warning-sign authorisation authorised authorization