<p>Marianne Christensen teaches at the Université Paris 1 Panthéon-Sorbonne and is joint head of the research at Étiolles. Here, she explains the main principles behind the exploration of successive archaeological levels.</p>

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Extract from the film “Étiolles, un chantier de fouilles qui fait école” © Université Paris 1 Panthéon-Sorbonne/Director © Florent Alias/Music: Blue Dot Session - Bidous Transit