Hiaure

Hiaure is a volcanic island located in the Mariana Islands, a chain of islands in the Pacific Ocean that also includes Guam. The island is uninhabited and has a total area of approximately 2.15 square kilometers. Its coral reef surrounds the island, and the terrain is primarily composed of volcanic rock.

The geology of Hiaure is characterized by volcanic formations, which suggest that the island was formed as a result of volcanic activity. The island's volcanic origin is further supported by the presence of volcanic fractures and rock formations. There is no concrete evidence to suggest that Hiaure was elevated above the sea level in the recent geological past, which is supported by the general lack of sedimentary rock and erosion.

Hiaure is not part of any administered territory, but it is under the jurisdiction of the United States. The island is situated within the United Nations designated Exclusive Economic Zone of the United States, but its permanent sovereignty over its resources remains unclaimed. The island's geographical location poses a navigational hazard to passing ships and aircraft due to its coral reef. However, this also makes Hiaure a valuable resource for marine research and more broadly, the knowledge of how human activity and sea organisms interact.