This section of the trackway or road, NPRN 23712, runs from Rhyd Hengae at SN8239368206, to Carn Ricet at SN8715370924, a distance of 6km. It is shown on the 1833 1" to 1 mile Ordnance Survey map as a road/track. On the 1st edition Ordnance Survey map of 1891 it is shown as track in use and labelled ?Ancient Road?. The trackway today follows the same line as shown on both these maps and is now called the Monks Way or the Monks Trod.

At Rhyd Hengae, SN8239368206, where it fords the Afon Claerwen, the track is quite broad and ill-defined with animal trampling. As it runs diagonally up the west-facing slope of Llethr Ffos To, it is a terraced path up to 4m wide but when it reaches the steeper section at SN8281768493 it narrows down to a footpath no more than 1m wide, suffering heavily from erosion. Reaching the top of the steeper slope at SN8297768546, it becomes a grass-covered, shallow ?hollow way?, up to 4m wide at base. At SN8315068577, an informal modern vehicle track approaching from the south joins the trackway giving access to NPRN 503506. From SN8317968612 the trackway is terraced rather than a hollow way, with some erosion occurring from vehicle use. Going down the slope the erosion increases as the surface water increases. The modern track diverges to the south of the trackway, presumably to avoid the rutted areas. At SN8327468775, the trackway is revetted on its southern side by rough, coursed stonework. The dating of this is uncertain but as this part of the trackway has been used for vehicular access to NPRN 503506 since the early 20th century it may relate to that. East of this the ground becomes wetter, with standing or running water on the trackway until it starts to climb again at SN8363268778. The boulder clay is much thinner here and the trackway braids across a rocky surface. Once the trackway reaches the flatter ground at Blaen Rhestr the trackway continues as a track with one set of wheel ruts, up to a short track created by vehicles driving to NPRN 503508. This track has been created by erosion of the overlying peat and the same natural boulder clay/stone can be seen exposed as is seen in the trackway. The trackway now continues along the broad ridge of Clawdd Du Mawr and Clawdd Du Bach to Carn Ricet. The trackway is sometimes indistinct neither a hollow way nor terraced. As it approaches Carn Ricet it becomes more of a hollow way, often water-logged. Beyond Carn Ricet, the trackway has been given NPRN 261236.

Andrew Fleming stated in 2009, The Making of a Medieval Road, Landscapes, Vol 10, Number 1, pages 77-100, that the much of this section of the trackway had been metalled. However, the wider scope of Upland Survey project in 2009, suggested that stone thought to be metalling was probably material within the boulder clay, seen clearly in many exposures throughout the area. The stone revetting of the trackway was only seen on the section of track used since the early 20th century for access to NPRN 503506. This use included bringing all the materials to build NPRN 503506, so it is possible that the stone revetting was to strengthen the trackway for this. J.J. Hall, Trysor, 31 January 2010