Abstract: An apparatus for the opening up of garbage dumping ground gas sources and for the exploration and sanitization of old deposit site burdens and contaminated soils. A hollow cylindrical probe is insertable into the gassy zone of the dump and is provided with wall perforations, serving as gas inlet apertures, as well as with a gas evacuation duct. The apparatus posseses a rigid probe body permitting it to be pile-driven into the dump or soil surface. The body includes a hollow cylindrical steel container, the casing wall of which is provided with the wall perforations and the diameter of which is larger than that of a gas evacuation duct coaxially and detachably connected therewith the apparatus is insertable with as little disturbance as possible of the dump material. At the same time, the apparatus forms a cavity therein which is suitable as a gas collection and control chamber.