On my trips to the Big Island of Hawaii I have had the opportunity to hike down into both Pololu and Waipio Valleys and up the trails on the far rims towards Honopue and Waimanu Valleys respectively. I have wondered if the Awini Trail connects the the Northeast Coast together or is it a jungle bushwack beyond the above mentioned valleys making a connection between the roads at either end a near impossibility?

This video and the associated comments explain all: https://www.youtube.com/watch?v=u46mHlI3pD0