Hike Kilauea lava flows dating back to 1881 up to the historic changes of 2018. First, you'll travel across Saddle Road between Mauna Kea and Mauna Loa, two of the tallest and most massive volcanoes on Earth. Your National Park Service certified guide will discuss the volcanology, geology, and history of these monstrous wonders, as well as providing in-depth narration on the various lava flows and flora and fauna that you'll be passing by.