Abstract: An avalanche rescue marker system consisting of an openable pack assembly and a trigger inflation assembly, the openable pack assembly being carried by the user on his upper back and the trigger inflation assembly being carried by the user on an upper front portion of his outer garment with a gas tube coupled therebetween. The trigger inflation assembly carries a gas cylinder having compressed lighter-than-air gas therein and is coupled to the input of a deflated marker balloon which in turn has its neck portion coupled tethered to a tether which is folded in anti-fouling loops. When a lever is pulled by the wearer the gas in the cartridge enters the balloon, inflating the balloon after which the balloon automatically escapes, pulling the tether upward along with it. The tether is attached to the wearer and hence, the balloon becomes a marker marking the location of the wearer.