The Vent showing is located on the lower south western slopes of Adder Mountain, approximately 900 metres east of the Kennedy River.

The area is underlain by andesite of the Upper Triassic Karmutsen Formation, Vancouver Group and by minor felsite flows. These are intruded by quartz monzonite, quartz diorite and diorite of the Lower to Middle Jurassic Island Plutonic Suite. There are two prominent sets of fractures; one set striking east-west and dipping north at 53 degrees, the other set striking 065 degrees and dipping west at 80 degrees.

Pyrite and pyrrhotite are abundant in all rock types, occurring as veins, fracture coatings and disseminations as well as in quartz- pyrite veins and stringers. Minor chalcopyrite with traces of molybdenite occur locally with the iron sulphides.

In 1968, Raw Materials completed a program of silt and soil sampling and geological mapping on the area as the Vent claim. In 1969 and 1970, programs of silt and soil sampling, geological mapping and a ground magnetometer survey were completed. This work identified a 480 by 300 metre area copper-molybdenum geochemical anomaly (Assessment Report 2464).

In 1971, Croydon Mines Limited completed ground magnetometer and induced polarization surveys.

In 1972, three diamond drill holes were completed in order to test an area of abundant pyrite mineralization. Only minor chalcopyrite was encountered. One 30 centimetre section of core, at about 174 metres depth, contained a 1 centimetre quartz vein carrying blebs of molybdenite and pyrite. This section gave the best assay, containing 0.21 per cent copper and 0.25 per cent molybdenite (Unis, W.E., 1972).

In 1975, J.C. Graham completed a program of prospecting and rock sampling on the area as the Ken claims.