Oshima Island is a volcanic island located in the Izu Islands of Japan. It is part of Tokyo Metropolis and is known for its beautiful landscapes, including lush forests and scenic coastlines. The island is also home to the active volcano, Mount Mihara, which last erupted in 1986. The island has a small population and is primarily known for its hot springs and outdoor activities, such as hiking and fishing. Oshima Island is accessible by ferry and offers visitors a chance to experience its unique natural beauty and cultural heritage, including traditional Japanese festivals.