Kilauea is one of the world's most active volcanoes. It sits on Hawaii's Big Island and is a part of Hawaii Volcanoes National Park. The park's Kilauea Visitors Center has information about lava flows, trails and road conditions as well as exhibits on ecosystems created by the mountain's ongoing volcanic activity. Most tourists come to see the lava flows, spectacular glowing rivers of melted rock. However, not everyone will leave amazed, as the mountain has an ever-changing landscape. Sometimes the flows are active and easily visible and sometimes they are not. It pays to use the resources available from the National Park Service to plan where and when to see the flows. For those who want an up-close look, interpretive hikes and ranger-guided tours take place daily.