Boulder Stream is a narrow, slow-going 4WD route in the Tasman region that hugs the cliffline as it works its way through to the hut. Expect a super bumpy ride over rough, rocky ground, so take your time and don't plan on covering much distance quickly. The track rewards the effort with cliffside views and a remote, rugged feel. There are plenty of little campsite spots scattered along the way, making it easy to pull over and settle in for the night wherever the scenery takes your fancy. With the hut at the end as a destination, it's well suited to those wanting an unhurried overnight trip rather than a quick blast. Allow a generous amount of time to enjoy the route at the pace it demands.