Fig. 2. Characterising migratory patterns from two-state Lévy-like walkers.

a Results from one of the mechanistic simulations showing predicted migration routes passing through 34 of the 40 archaeological sites defined in Supplementary Table 1. Colours represent the number of walker moves between consecutive circles and the size of the circle is scaled based on the cumulative distance travelled by walkers for each 50 km segment. b Zoom in three regions illustrating different patterns of movement from relatively direct migration in the area surrounding Lake Carpentaria (governed by the correlated random walk state) to more erratic behaviour (lower right panel) forced by the underlying high-cost surface of the Tirari (left) and Strzelecki (right) deserts. Generated paths using the SimRiv software and visualised with the open-source python interface for the Generic Mapping Tools (https://www.pygmt.org).