I’m sorry, but I couldn’t find any specific information about a « low tech festival in Concarneau in 2023. » It’s possible that the festival you mentioned may be a local or less-known event, or the details may not be available at this time. I recommend checking local event listings, official tourism websites for Concarneau, or contacting local authorities for more information about upcoming festivals and events in the area.
I’m sorry, but I couldn’t find any specific information about a « low tech festival in Concarneau in 2023
