[4] The Bay of Mazarrón is sheltered by the last foothills of the Sierra de la Almenara, a mining area since the Carthaginian era.

[5] The economic development of the early 20th century led to the construction of emblematic buildings in the style known as Murcian Modernism, including the Mazarrón Town Hall and the former Cultural Athenaeum.

The guns in Cartagena were built to defend the vital port of Cartagena in the 20th century, these guns alongside the fort and other coastal defences, stand 56 feet long, weighing a total of 88 tons each and being able to fire at a range of some 20 miles.

This municipality borders Cartagena and Fuente Álamo at its east, Alhama de Murcia and Totana and its North and Lorca at its West.

[2] The main landform of the municipality is a mountain range named Sierra de Las Moreras, which is located in the west.

[11][12] The most ancient data which are known about the territory corresponding to the current municipality date from the Middle and Upper Paleolithic.

[13] The remains of these spots consist of material related to manufactured tools such as flint spear tips, scrapers, racloirs and hammerstones.

In regards to Chalcolithic and Bronze Age in this current municipality, a prehistoric hamlet in a local range named Sierra de las Moreras can be mentioned.

A cemetery is located in this ancient locality, but nowadays the only remains of this necropolis consist of a circle-shaped megalithic tumulus.

[15] Some centuries after the Phoenicians and Greeks, there was an Iberian presence in this area, but this occupancy left few traces.

In 209, Romans conquered the current Spaniard locality of Cartagena (whose name was Qart-Hadast in that era) and won the war.

Consequently, Mazarrón became part of Al-Andalus, the territory in the Iberian Peninsula under Muslim government and control and also a province of the Umayyad Caliphate.

Since that fact, an own towncouncil was avoidable for Mazarrón and its period as a municipality (which remains nowadays) started.

In that period, besides the economic rise, there was also insecurity in the territory due to pirate entrances and attacks.

This apogee in mining led to a progress in the environment, many investments, a lot of immigration, electric streetlight, railways, important buildings, miner hospital, etc.

During those years, people in the village just tried to survive and foreign capital stop being invested in Mazarrón.

[20] Mazarrón began to leave the situation of recession because the economic activity was addressed to other areas and they would bring this territory its current characteristics.

During the 20th century the society changed the economic activities from mining to agriculture, construction and tourism.

[20] 36.98% of the inhabitants are foreigners - 11.29% from other countries of Europe, 12.94% are Africans, 4.27% are Americans and 167 Asian people reside there.

The alcalde (head governor in a municipality) of Mazarrón elects 7 members from the pleno in order to form the junta de gobierno.

There is a consultorio (primary care health centre with fewer functions and less specialised than the centros de salud) in Camposol and another in La Majada.

[67] During these days there are groups of people who get together specifically throughout the festivities and do activities related to the celebration (the Spanish concept of 'peña').

They prepare the events that will take place during these festive days and issues related to that such as the floats of the parades.