Duna (also known as Yuna) is a Papuan language of Papua New Guinea. It may belong to the Trans New Guinea language family and is often further classified as a Duna-Pogaya language, for Bogaya appears to be Duna's closest relative, as evidenced by the similar development of the personal pronouns. Estimates for number of speakers range from 11,000 (1991) to 25,000 (2002). Language context Duna people Duna is the native language of the polysemically named Duna people, who live in the north-western area of the Southern Highlands Province. The area lies in a mountainous terrain with altitudes ranging from 900 to 13000 feet. With an even distribution of rainfall (4500mm annually) and temperatures (65 to 83 °F), the environment qualifies for farming and some tree cultivation. This is why most Duna are substance farmers with sweet potatoes being the staple food, alongside other gardened fruit and vegetables. Furthermore, they keep domesticated pigs and trap fish in Lake Kopiago while also hunting smaller game such as possums, bats and little birds. In addition, the diet includes gathered mushrooms, ferns and cresses. The Duna are grouped in clans and parishes. Each member shares extensive responsibilities, requiring a substantial social effort for the group. Before the first direct contact with Europeans in the 1930s, their culture maintained a strict separation of males and females. Early on, boys were separately raised and trained into manhood. Other significant themes of pre-contact life included ordered warfare, courting and the potency of ritual sacrifice. Since the establishment of a government station in the 1950s by Australia, the customs and traditions have undergone some significant changes, for instance community schooling etc. There is only little paid work available in the area and electricity or telecommunication networks are not regularly accessible. The region does have a large health centre near Kopiago and a community school up to 8th grade. The Highland Highway is part of the overland transport network, but it is intermittent and in poor condition, so that most traveling is done on foot. Flights go fairly regularly on a weekly or twice-weekly basis to Kopiago. Language influences The relatively late contact with Europeans means that the impact on the Duna language from English has only been recent. As the cultural changes brought about several new concepts, the lexical vocabulary was enlarged by a variety of loanwords, though it is unclear whether these came from English or the