This paper reviews the use of faunal remains as fabric indicators in fossil-bearing cave deposits. Faunal remains, once deposited underground, conform to colluvial slope particle dynamics and develop recognisable fabric patterns. Assessment of fabric patterns has been shown to be a powerful tool for deciphering depositional processes. The hominid-bearing cave deposits of the Cradle of Humankind, South Africa have yielded some of the most important hominid fossils yet discovered, but are renowned for their stratigraphic complexity. In these contexts, faunal remains have primarily been used in more conventional taxonomic and taphonomic analyses. In addition to their potential for ex situ analysis, faunal remains can represent a valuable component for in situ analysis where natural clasts are unsuitable as fabric indicators. This paper presents the first application of biofabric analysis to the plio-pleistocene palaeocave deposits of the Cradle of Humankind, South Africa. Data from two depositionally distinct deposits found in one of the deeper, more stratigraphically complex areas of the Sterkfontein Caves are presented. Detailed analysis of the biofabric, applied during stratigraphically sensitive excavations, is shown to help determine depositional processes, identify probable source deposits and slope formation dynamics, and assess underlying receptacle morphology. This in situ analysis is a simple yet useful tool for increasing stratigraphic resolution in these complex and challenging depositional environments.