Duricrusts have contributed valuable insight to the evolving field of regolith science over the past two centuries. These mineral-rich layers occur in diverse settings, from hilltops to valley floors, and are thought to form through two main processes. In 2025, we introduced the first numerical model for the hydrological hypothesis; now, we present a complementary model based on laterisation. This framework simulates both the development of duricrusts and their impact on landscape evolution.