Pedal through lush rainforests and dormant craters, discover endangered plants and secret archaeological sites. The Mauna Loa Road allows you to cycle through grasslands, lava fields and koa groves at an altitude of 13,677 feet. In some areas of the park, you can climb 3,000 feet within six miles, so be prepared for a workout.
On this spectacular route you can stop off at Kilauea Overlook to see the Kilauea Caldera and Halema'uma'u Crater. Next, explore sulphur banks and steam vents which overlook a treeless plain. Don't miss the Thurston Lava Tube at Nahuku, an illuminated tunnel of rock surrounded by bright birds and red ohi'a blossoms.
As its name suggests, the island's craters are nodes on this arterial road. From the Lua Manu Crater, continue past the Hilina Pali Road to see the Pauahi Crater and the remarkable Maunu Uli Flow. A three mile fissure opened here, transforming a once thick forest into the present cinder field. Don't forget to visit the Holei Sea Arch, a stunning 550 year old formation that looks as through the land were dipping a toe into the turquoise sea below.