A lens of light grey, coarse grained limestone outcrops 950 metres east of the south end of Mead Lake, 3.3 kilometres north of the Pioneer mine (092JNE004). The lens lies within chert and argillite of the Mississippian to Jurassic Bridge River Complex (Group). The limestone was quarried for lime for use at the Pioneer mine during the early 1930's when 23 tonnes were produced.