End of Moloa'a Road, Kilauea HI 96754
From the main highway (Hwy 56), turn onto Ko'olau Road (between mile marker 16 and 17). Then turn onto Moloa'a Road. The public access trail is near the end of Moloa'a Road. There are only a few parking stalls here. So if they are all taken, you may have to park a bit further away.