Mars? If we want to know how mars can be, it is possible to have a good approximated view of this planet in some places on the Earth. One of them is in Mazarrón. It is due to the human activity for centuries. Very close to this town, an ancient mine can be visited. The extraction of diverse minerals generated enormous quantities of highly polluted waste sand that was put in the vicinity of the mine. After many years, mountains were generated. The scarce but intense rains sculpted the skin of these mountains to originate a Martian landscape. But the presence of these contaminants has avoided the growing of any kind of plants after so many years.