The Humming Bird showing occurs along the west side of Lookout Mountain, near its summit, about 4 kilometres northeast of Hedley.

The northwest and southwest slopes of Lookout Mountain are primarily underlain by andesite ash tuff and tuffaceous siltstone of the Upper Triassic Whistle Creek Formation (Nicola Group). These rocks are intruded by hornblende porphyritic diorite dykes of the Early Jurassic Hedley Intrusions.

Arsenopyrite and pyrite occur disseminated in a "fine-grained igneous rock" (tuff?). Samples of the mineralization are reported to average 5 to 7 grams per tonne gold (Minister of Mines Annual Report 1901, page 1163). High copper values are also reported.

The showing was trenched, tunnelled and diamond drilled (610 metres) between 1901 and 1906.

A narrow quartz vein occurs in the immediate vicinity of the above showing, likely on the Lookout claim (Lot 899s). The vein is primarily hosted in argillite. In one instance, the vein occurs along the contact between diorite and limestone. The vein strikes 153 degrees and is 0.2 to 0.36 metre wide. Trenching and tunnelling has traced the vein over a strike length of 60 metres and a vertical depth of 13 metres. It is displaced at depth by a crossfault.

The vein is mineralized with disseminated pyrite and arsenopyrite, both extensively oxidized. Samples are reported to contain 18.6 to 66.3 grams per tonne gold equivalent for combined gold and silver (Minister of Mines Annual Report 1923, page 186). Free gold occurs in the silicified and pyritized limestone near the vein.

This occurrence was explored with a series of opencuts and shafts, and one 33-metre long adit between 1923 and 1931.