The Hidden Creek copper occurrence is located in the bed of Eakin Creek, 5 (air) kilometres northwest of Little Fort.
The showings consist of "iron and copper sulphides" hosted in "calc-silicate rocks" and are exposed in old pits (Assessment Report 18404, figure 3). Two old adits are also shown on figure 3. Hostrocks in the area are skarn-altered limestones and associated silicified sedimentary rocks of the late Paleozoic Harper Ranch Group (Fieldwork 2000, pages 1-30) in contact with diorite, monzonite and silicified greenstone of the Dum Lake Intrusive Complex. The calcareous units can be traced from Nehalliston Creek in the north to Eakin Creek and are sparsely mineralized with chalcopyrite and locally galena (Assessment Report 13519). Malachite staining was also noted along a length of approximately 500 metres on the west slope of the hill north of Eakin Creek (Assessment Report 24896).
The Upper Triassic to Lower Jurassic Dum Lake complex is comprised of ultramafic and mafic plutonic rocks that could be part of an Alaskan-type intrusive body. The mafic portions of the Dum Lake complex are dominated by coarse to medium-grained gabbro and diorite but locally includes clinopyroxenite, monzogabbro, microdiorite and tonalite. The ultramafic portion of the Dum Lake complex includes an assemblage of variably serpentinized, locally talc and carbonate-altered rocks consisting of clinopyroxenite, wehrlite and dunite. The Dum Lake complex is truncated by granodioritic rocks of the Triassic to Jurassic Thuya batholith on its southeast side. On its eastward side, Dum Lake complex diorites and gabbros are in contact with massive andesites of the Upper Triassic Nicola Group and argillites, limestones and cherts of the late Paleozoic Harper Ranch Group (Fieldwork 2000).
The earliest recorded work on the Hidden Creek (Canyon) property was pitting, trenching and 6.5 metres of diamond drilling in 1968, 1969 and 1970 (Geology, Exploration and Mining in British Columbia 1968, 1969 and 1970). Although old adits are present in the area (Assessment Report 18404, figure 3), there is no other information about them. In 1988, Explorex Development Corporation completed a 200 metre magnetic-radiometric-VLF-EM survey down Eakin Creek (Assessment Report 18404). Prospecting in 1996 by W.T. Hall detected malachite staining in "fractures of rock with andesitic or dioritic texture" on the Nest 4 and Cliff 1 claims (Assessment Report 24896).
