The Cedar manganese occurrence is located on a high ridge separating Cedarflat and Carry creeks, at an elevation of approximately 1520 metres.

The area is apparently underlain by sedimentary rock of the Lower to Upper Cretaceous Pasayten Group. These are typically arkose, conglomerate, argillite, minor red beds and tuff. The eastern margin of the Eocene Needle Peak pluton also occurs in the vicinity of the given location for the occurrence. The pluton is composed of granodiorite.

Little is known of the manganese occurrence, having only one source of documentation (Geological Survey of Canada Summary Report 1920 Part A, page 38). All that is reported in that reference, other than its location, is that the occurrence is a "manganese deposit of commercial importance".

In 2006 and 2007, the area was prospected by W.L. Amey as the That Way claim.