evidence: Subsequent to the Arbitral Award of 1899 that fixed the border between Venezuela and Guyana, between 1900 and 1904 a joint survey team physically demarcated that border which was accepted by all parties concerned as attested by a map signed on January 7, 1905 by two commissioners each from the British and Venezuelan sides. At the confluence of the Wenamu and Cuyuni Rivers, the island of Ankoko had been divided into two with the eastern half belonging to Guyana and the western to Venezuela. The physical markers were made of bullet wood posts driven into the ground and buttressed by stones from the river. This border was respected until October 12th, 1966, a mere five months after we became independent, after Venezuelan troops moved across the border, occupied our half of the island, and constructed an airstrip.