Onekotan Island, Russia An island within an island was created after a big eruption around 9,000 years ago caused the peak of Onekotan’s volcano to collapse, forming a caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the island at around 4,300 feet.
Image: NASA. Excerpt from Wired.com.Collection of beautiful images taken by astronauts and satellites from space of some of the most interesting islands on the planet. AWESOME!