was a life-size font for a baptism by immersion, a very common practice among early Christians. Royal Artillery Factory: The Royal Artillery Factory built in the 18th century can be considered as the second Andalusian blast furnace, with the other one being located at Cartajima. They arise from the efforts made by Eduardo Boyetet who proposed the idea of smelting weapons in the area to King Charles III in 1761. An iron mine was near San Pablo de Buceite, whose production would supply raw material to the Royal Artillery Factory and wood (for fuel) would come from the existing forest masses. The bellows were moved by the water carried by the canal. Its foundry, which didn't prosper until 1777 and was abandoned in 1788, was designed to cover the supply to the Indies, took on the needs arising from Gibraltar, where most of its production was destined. There are remains of a factory that didn't operate on known as La Fábrica de las Bombas (the Bomb Factory) on the banks of the Guadiaro River. On the banks of the Hozgarganta, on La Pasada de Alcalá, there are more significant remains, such as the main wall. The absence of a continuous and sufficient flow from the river sentenced its abandonment. The channel, about 600 metres long and 4 metres wide, reaches a depth of 5 metres in some areas. The canal is built with sturdy stonework, sometimes dug out of the rock itself. It became operational in April 1780, coinciding with the Great Siege of Gibraltar. "La Sauceda" House of Memory, to commemorate the atrocities that occurred at El Marrufo during the Civil War. Religious Monuments Sanctuary of Our Lady Queen of Angels: The Sanctuary of Our Lady Queen of Angels (Spanish: Santuario de Nuestra Señora Reina de los Ángeles) is located two kilometers from the center of the municipality. It was built at the end of the 15th century and renovated during the 17th century. It housed a community of Franciscans and, after the taking of Gibraltar by the English, it served as a refuge for the Poor Claires that fled from the Rock. The church of the Sanctuary consists of a single barrel-vaulted nave with lunettes, which leads to the main chapel and is closed by a dome on horns and a high choir at the foot. The sacristy and the cloister are noteworthy, a square plan with arches