The commune is situated by the Auvézère river, and is surrounded by other communes including Saint-Cyr-les-Champagnes, Saint-Mesmin, Lanouaille and Payzac.
The schist crops out in a 3 kilometer wide, slightly curved band that starts at the type locality Donzenac and extends to Lanouaille.
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The unit starts just west of Thiviers in the northern Dordogne and then follows for 70 kilometres a semicircular arc segment, passing through Lanouaille, Payzac, Orgnac, Donzenac and finishing just east of Brive in the Corrèze.