Polytunnels
Polytunnels being built, with hoops being mounted.
Near Arles, Bouches-du-Rhône, France, late July.
"This site of a polytunnel being built illustrates the principal stages of work: ground levelling, implantation, laying the elements out, progressive assembly and finally the erection of the arches."
Pierre Villin, Richel Serres de France, Eygalières, Bouches-du-Rhône, France
in " Planting patterns ", p. 145