Rorutuna (also Rorotuna) is a town or city lying at the end of the south-eastern arm of Lake Cauldron in northern Lendleland in the Old World. The strange minerals and crystals which form in Lake Cauldron are mined in Rorutuna, albeit on a smaller scale than at Crystal City. A near-legendary resident of Rorutuna was Erlik Vinner, landlord of The Happy Landlord inn.