Johnston Atoll and biological weapons testing site, a secret missile base, and a chemical weapon and Agent Orange storage and disposal site. These activities left the area environmentally contaminated and remediation and monitoring continue. The Johnston Atoll is a deserted atoll in the North Pacific Ocean located about southwest of the island of Hawai'i and is grouped as one of the United States Minor Outlying Islands. The atoll, which is located on a coral reef platform, has four islands. Johnston (or Kalama) Island and Sand Island are both enlarged natural features, while "Akau" (North) and "Hikina" (East) are two artificial islands formed
Northern Thiladhunmathi Atoll there are three Tourist resorts in the atoll. North Thiladhunmath is third largest atoll in the Maldives in terms of population and land area. The atoll being at the north tip of the Maldives is the closest to Sri Lanka and India. Northern Thiladhunmathi Atoll contains 42 islands, 16 of which are inhabited. NOTE: "Haa Alifu, Haa Dhaalu, Shaviyani, Noonu, Raa, Baa, Kaafu, etc. are code letters assigned to the present administrative divisions of the Maldives. They are not the proper names of the natural atolls that make up these divisions. Some atolls are divided into two administrative divisions while