Folks, as 4x4.wales has mentioned, there is a narrow gateway between two stone walls along the upper section of the trail. There are also two pedestrian type gates at the Dolwyddelan side of the route, one is at the upper section of the moorland as you exit the forest if heading North, the other is behind a house just before you reach a tarred road near High Street. There is no way you will get a 4x4 through any of these gateways.