Turn onto Quailburn Rd from SH8 and follow the signposts to the Clay Cliffs. Henburn Rd is gravel / unsealed.
The cliffs are on private land, there is an honesty box at the gate where you can pay an entry fee of $5 per car.
Depending on what the weather has been like, the unsealed road here can be really rough with large rocks and deep muddy areas. It is therefore recommended that you either have a 4WD or be willing to park before the rough section and walk the rest of the way.
The slopes inside the cliffs can be steep and slippery with loose gravels so be sure to wear sturdy footwear!
An easy 10-15 minute walk to the entrance of the cliffs from the carpark at the end of the road. From there it's up to your fitness and ability level as to how far you wander in (moderate)!