While debating with Joke Honders how the monks at Trecht between Rhenen and Kesteren could be eating fish from the Almere, usually viewed as far away, she pointed out the curious description by Pomponius (44 AD) of the Rhine lapping into the Vallei and then continuing to the sea. This helped to clarify how Boniface could sail across the Aelmere to Dockingha in Frisia, which was far removed from present-day Friesland. Its shores are still visible in the landscape around insula Flevo, now called De Kraats. Dockingha is now De Kade 10 km west of Ede and it remained a port into the 20^th Century.