The Welden 1 showing outcrops in the canyon of the Tulameen River, on its north side, 750 metres east of the mouth of Lawless Creek and 5 kilometres west-southwest of the town of Tulameen.

A bedded quartz vein, 5 to 15 centimetres wide contains disseminated pyrite, chalcopyrite and sphalerite. The vein is in interbedded argillite and greenstone of the Upper Triassic Nicola Group, just south of a west-striking fault.