Not surprisingly, it is underground Maillezais that is best preserved.
Here we see the all important salt cellars where one of the greatest treasures
of the ages was stored. Before the invention of modern refrigeration
salt was the only was to effectively store food over the seasons. Any
treasure included salt and this was not the least of Maillezais's riches.
The monastery operated some 150 salt producing marshes in the nearby wetlands.
We'll visit one of them just outside Les Sables on Thursday.