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
Alif Alif Atoll Dhaalu Atoll. The North Ari Atoll administrative division consists of the northern part of the geographic or natural atoll Ari Atoll (described as Northern Ari Atoll in this context to differentiate from the official name of the administrative division), Rasdhukuramathi Atoll and Thoddoo Island. The atolls consists of Inhabited Islands and Uninhabited Island, a definition which includes resort islands, airport islands and industrial islands. Maalhos: Maalhos is geographically the westernmost island of the Atoll and the second-most westerly inhabited island of the Maldives after Maamakunudhoo). Vajrayana Buddhist remains have been found on this island. Rasdhoo: Rasdhoo is the capital island