As part of itsDoctor Supervised Integrated Health Patrols, ADI's volunteers travel by plane, boat and foot to remote and rural health centres, aid posts and hospitals to provide essential health care to people living in extreme poverty. Western Province, which is located on the border with West Papua, consists of raging rivers, steep mountain ranges up to 8,000m, vast floodplains and dense jungle. New Ireland Province, which is located off the mainland in the far northeast of PNG, consists of many isolated islands separated by rough seas. It can take weeks to complete a patrol in places such as the Star Mountains and Awaba River region in Western Province or Konoagil (otherwise known as The Last Corner by locals) in New Ireland Province.