Cooling Nuclear Tower Big Graffiti - a mural for the cooling tower at Cruas, which provides France with 5% of the electrical energy, was designed in 1991 by artist Jean-Marie Pierret, and completed by nine mountain climbers with 8000 hrs employment and 4,000 liters of paint! The topic of 'ecological' describes the relationship between 'water' and 'air', and was inaugurated with the name 'Acquarius'.