Kīlauea is one of five subaerial volcanoes that make up the island of Hawaiʻi, created by the Hawaii hotspot. The oldest volcano on the island, Kohala, is more than a million years old, and Kīlauea, the youngest, is believed to be between 300,000 and 600,000 years of age; Lōʻihi Seamount, on the island's flank, is younger and has yet to breach the surface. Thus Kilauea is the second youngest volcano in the Hawaiian-Emperor seamount chain, a chain of shield volcanoes and seamounts extending from Hawaii to the Kuril-Kamchatka Trench in Russia.