Mother lode is a principal vein or zone of veins of gold or silver ore. The term is also used colloquially to refer to the origin of something valuable or in great . Gold may occur as deposits called lodes, or veins, in fractured rock. It may also be dispersed within Earths crust. Most lode deposits form when heated fluids . Best mine exploration video yet! We climb to the top of a mountain and find a standing tram tower with a blacksmiths shop and a mine complete with a