Pre-Phylloxera vines in Midi-Pyrénées get Monument status

A couple of years ago in Provence, I had a bottle of wine from a local, pre-phylloxera vineyard. I lost my notes so can't remember the name but, apparently, the vigneronne flooded the vineyard every 2 or 3 years to prevent any infestation. At least, that's what the sommelier told us. Graham