The phylloxera crisis of the late 19th century wrought a great deal of damage to the Médoc. This was compounded by difficulties during the First World War and problems caused by French inheritance laws that often led to vineyards being abandoned.  Some small estates disappeared entirely.  This is what happened to Château Retou-Rosset in Lamarque.  This estate only came back to life in the 1950s, when they were acquired by the Kopp family. The vineyards were reconstituted and replanted with infinite patience.  The estate still belongs to the Kopp family: father, daughter, and son-in-law.  Château du Retout presently has 34 hectares of vines: 32 hectares in the Haut-Médoc appellation and 2 hectares of mixed white wine varieties.  The vineyard is mostly located on a gravelly rise. A mill dating from the 13th century is in the middle of the vineyard, at its highest point (altitude of 17 metres).  The terroir consists of two main soil types: clay and gravel at the bottom of the rise and deep Garonne gravel on the top.  The vines (68% Cabernet Sauvignon, 25% Merlot and 7% Petit Verdot) are an average 30 years old and vine density is 6,666 per hectare.  The cellars at Château du Retout were rebuilt with concrete vats in the 1960s.  A new vat room was constructed in 1973 to house stainless steel vats, all of which have been temperature-controlled since 2001.