The sanctuary on top op the acropolis was re-excavated in 1978-1981. Metrological analyses by Prof. J. de Waele, published in 1981 convincingly demonstrated a succession of three building phases dated from the late 7th to the early 5th century BC. Further investigations in the subsoil showed a particularly large, rather isolated hut to have preceded them, possibly with a religious function. Evidence for a large number of other huts of various shapes testify to a concentrated use of the acropolis during Latial periods II-IV (1000 - 580 BC).