138319.fig.004
Figure 4: Stratigraphy, cave infill history, and palaeoenvironment/valley genesis reconstructions. (a) Sections. (b) Pliocene-Early Pleistocene cave erosion and first sedimentary filling. (c) Middle Pleistocene river terrace sediment infill, and (d) latest Late Pleistocene river terrace sediment infill. (Early to Middle Late Pleistocene; see Figure 5).