Thanks to the assistance of Micaela Frow this does appear to be part of Les Treilles, the steep south facing coteau that Jo and Isabelle Pithon have brought back to life. Les Treilles was a thriving hillside of vines until arolund the end of the Second World War when it was abandoned in favour of less steep vineyards that could be worked by machine. The hillside, whose slopes vary from 30 %-70%, became over-grown and virtually impenetrable.
View across the Layon towards Pierre-Bise
towards the A87 autoroute and the village of Beaulieu