Papers from the session entitled 'Megalithic Quarrying' presented at the XV UISPP World Congress (Lisbon, 4-9 September 2006). Contents: Preface (Chris Scarre); 1) Stony Ground: outcrops, rocks and quarries in the creation of megalithic monuments (Chris Scarre); 3) The Megalithic Building Site (Torben Dehn); 4) Hunebedden and Hunengraber: the construction of megalithic tombs west of the River Elbe (Jan Albert Bakker); 5) The Gallery Graves of Hesse and Westphalia, Germany: extracting and working the stones ( Kerstin Schierhold); 6) Beyond Stonehenge: seeking the start of the bluestone trail (Timothy Darvill); 7) Architectonique et esthetique des alignements de menhirs du sud de la Vendee (France) (Gerard Beneteau-Douillard);"