In fact, early Stonehenge may have been barely different from the other Neolithic timber circles of the British Isles, which had varying numbers of postholes and orientations and could therefore not have been used for in island-wide eclipse predicting. The interpretation of such timber circles is unclear, although parallels were drawn with Native American totem poles by Stuart Piggott in a 1946 BBC radio lecture. A 50 cm high carved wooden figure found in the Thames Marshes in 1912 and carbon dated to 2460–1980 BC has been used rather tenuously to support the theory of carved wooden posts serving a more terrestrial purpose.