 ![Logarithmic plot (in log00) of the amplitude for two excited states in the potential shown in Fig. \[fig:random\_u\]. One can observe here in detail how strong localization emerges from weak localization. Both modes are located in one of the subregions delimited by the valleys ways. Moreover, their decay is shaped by neighboring subregions. Firstly, the mode amplitude is more or less uniform within any subregion. Secondly, when going away from the main subregion, crossing a valley line corresponds to a decrease by one or two orders of magnitude. This leads to an exponential decay for distance larger than the typical size a subregion.[]{data-label="fig:log_modes"}](rand_log_mode00.jpg "fig:"){width="0cm"} ![Logarithmic plot (in log00) of the amplitude for two excited states in the potential shown in Fig. \[fig:random\_u\]. One can observe here in detail how strong localization emerges from weak localization. Both modes are located in one of the subregions delimited by the valleys ways. Moreover, their decay is shaped by neighboring subregions. Firstly, the mode amplitude is more or less uniform within any subregion. Secondly, when going away from the main subregion, crossing a valley line corresponds to a decrease by one or two orders of magnitude. This leads to an exponential decay for distance larger than the typical size a subregion.[]{data-label="fig:log_modes"}](rand_log_mode00.jpg "fig:"){width="0cm"} 