Main Island is the largest landmass in the Hawaiian Islands and is often referred to as Hawaii Island. It is known for its diverse landscapes, which include volcanic mountains, lush rainforests, and beautiful beaches. The island is home to Mauna Kea, the tallest mountain in the world when measured from its base on the ocean floor. The island features several unique ecosystems and is famous for its active volcanoes, including Kilauea, one of the most active volcanoes on Earth. Main Island also hosts the Hawaii Volcanoes National Park, where visitors can explore volcanic craters and witness the natural beauty of the island.