A kilometer drilled in granite up to a depth of 60 m reaches this facility through two tunnels. There, in four rooms of 160 m in length and in a silo of 50 m in height, radioactive waste is stored.
For the construction of this shelter it took four years and had to dynamite 430.000 m 3 stones. The cost of work has been 14 billion pesetas.
In the 60,000 m 3 of the tank, high-risk waste will be stored for the next 20 years.