 Its capital was at Poum, then moved to N'Dombo, and finally moved to Ross, Senegal in the 19th century (called Ross-Bethio since then).The original, fertile farmlands of Bethio are in a region just east of the Djoudj National Bird Sanctuary.In the 1720s, the Brak (king) of Oualo (Waalo) was Erim M'Bagnick (Yérim Mbañik) and Béquio Malicouri king of the "Royaume d'Oral" was his vassal.