The overlook provides an awesome view of the mile-wide Kilauea Iki Crater, and the hike across its hardened surface is the park's most popular. One good strategy for visiting this often crowded, but scenic portion of Crater Rim Dr is to park at the Kilauea Iki Overlook and walk the Crater Rim Trail to Thurston Lava Tube and back; it's about a mile all told and easy as pie.