(a) Associated metatarsal (C44) and knee (C45) traces allowing estimation of the tibial length of the producer. (b) Knee traces (C45, C42 and C41) imprinted on a plastic, waterlogged muddy substrate. (c) Metatarsal traces (C26, C44 and C44b) imprinted on a plastic, waterlogged muddy substrate. (d1) cast of the 1950s reproducing two knee (C41 and C42) and two metatarsal (C44, C44b) traces preserved in the area B of the ‘lower corridor’ (see Figure 1). (d2) Digital Terrain Model obtained from the HDI 3D Scanner. (d3) Topographic profile with contour lines, obtained from d2. (d4, Interpretive draw. In the knee trace, C42 are located the impressions of the patella (a), vastus medials (b), the fibular head (c), the patellar ligament (d) and the tibial tuberosity (e).