Limestone and dolomite are exposed in a roadcut 3850 metres west-northwest of the summit of Pavilion Mountain, 36 kilometres north-northeast of Lillooet.

This showing is situated near the western margin of a 10 to 15 kilometre wide belt of carbonate of the middle to Upper Permian Marble Canyon Formation (Cache Creek Complex) that extends north-northwest from Marble Canyon for 65 kilometres. Various exposures along the roadcut and just north and west of the roadcut reveal carbonate beds of up to 130 metres thick contained in a sequence of massive greenstone, agglomerate, shale, pebbly slate and sandy phyllite. Bedding along the roadcut strikes 157 degrees and dips 76 degrees southwest. A slaty cleavage strikes northwest and dips 43 to 89 degrees northeast.

Dolomite and magnesian limestone occur in individual beds up to 2 metres thick lying between agglomerates and limestone. Along the roadcut, half of the exposed carbonate is limestone and limestone breccia, while the remaining half is dolomite breccia. The dolomite breccia is dark grey with angular, black clasts. The limestone is medium to dark grey and commonly medium grained, rarely coarse grained. Some of the limestone breccia contains dolomite clasts. A sample of fine-grained dolomite from the roadcut analysed 33.22 per cent CaO, 20.44 per cent MgO, 0.73 per cent SiO2, 0.70 per cent Al2O3, 0.26 per cent Fe2O3, 0.05 per cent TiO2, 0.02 per cent Na2O, 0.02 per cent K2O, 0.03 per cent P2O5 and 46.13 per cent ignition loss (B.C. Hydro Report SE 8221, Table 3-1, Sample 16).

B.C. Hydro mapped and sampled the occurrence in 1981. The company was searching for dolomite in the vicinity of Hat Creek for sulphur sorbent to be used in the gas scrubbers of a proposed coal- fired electrical generating station.