A linear stone-built incline for the transport of building materials during construction of the Marconi antennas, commencing in 1913 but remaining in use for that purpose for later antenna arrays. It is typically 2.4m wide and up to 0.5m high. The incline ran across moorland, uninterrupted from the Marconi transmitter house at the western extremity of the wireless site to the summit of Cefn Du.

Source: Rowlands, J., Marconi's Carnarvon Station 1912-1939: a journey into early commercial wireless in north Wales' Second Edition, 2023.

RCAHMW, 2023.