The Twin (Lot 819) is immediately east of Greenwood municipal boundary.

A north-trending, 45-degree east dipping quartz vein occurs in granodiorite of the Jurassic-Cretaceous Greenwood Stock and argillite of the Upper Paleozoic Knob Hill Group. The vein varies in width from 2.5 to 46 centimetres and carries galena, chalcopyrite and pyrite. The vein is likely a continuation of the vein on the Barbara (082ESE007).

The claim was Crown Granted to J.W.H. Wood in 1898. In 1922, J. Drum extended the adit to 34 metres from the portal and shipped 2 tonnes, resulting in 933 grams of silver and 528 kilograms of lead.

During 2008 through 2012, Grizzly Discoveries Inc. completed programs of soil, stream sediment and rock sampling, geological mapping and ground geophysical surveys on the area as the Overlander area of the Greenwood property.