A world with bones
Raised from rock, worn by rain
Each world begins as rock: fifteen geological provinces of gneiss, schist, granite, limestone, chalk and red sandstone, in dipping strata cut by dykes and pierced by granite plutons. Mountains stand where the rock is hard and vales open where it is soft, because the land is worn down by a real erosion model.
Rain falls on the western slopes and gathers into rivers that cut their own valleys, widen into estuaries and fill lakes. Climate and height choose what grows: machair and salt marsh, chalk downland and beech hangers, Atlantic oakwood and Caledonian pine, heather moor and bare mountain. No two seeds share a coastline.








