After riding up the forestry roads to the Fringed Hill radio masts you'll start riding hiking trails through native forest. For bikers they are intensely technical with roots, drop-offs, sharp corners, narrow gaps and unrideable sections.
Ride-push along the ridge for two kilometers where you'll see two signs pointing to the left; an old one saying Peaking Ridge and a new one saying Sunshine Ridge. You'll ride down both ridges; Sunshine first, then Peaking.
Eventually, you'll come out on the Dun Mountain Trail which you'll follow back down to Maitai Valley.
Best not to go by yourself or without a topo map, food, water and your cell phone!