was agreed as making the southern terminus of the boundary in 1893 by British and Dutch officials searching for a clear physical feature which would enable authorities to deal confidently which headhunters who raided eastwards from Dutch territory. In 1893 the mouth of the Bensbach River was defined at 141 ̊ 01 ́ 47.9 ́ ́ E long. In 1958 Australian and Dutch surveyors fixed the mouth of the Bensbach River at 141 ̊ 01 ́ 07 ́ ́ E long., but in the 1960s Australian