Volusenus's reconnaissance voyage before the first expedition apparently identified the natural harbour at Dubris (Dover), although Caesar was prevented from landing there and forced to land on an open beach, as he did again the following year, perhaps because Dover was too small for his much larger forces.
A viaxe de recoñecemento que realizou Voluseno permitiu identificar o porto natural de Dubris (Dover), aínda que a César se lle impediu desembarcar alí e foi obrigado a desembarcar nunha praia aberta, ao igual que fixo ao ano seguinte, quizais porque Dover era demasiado pequeno para albergar a gran forza que César levaba.