The Fort of San Fernando and the Boca del Cerro: The fortress nobody visits and that defended Santa Marta from pirates

Origins

Few people know it, but Santa Marta had more than one fortress. We all recognize the Castillo de San Felipe de Barajas in Cartagena, and in Santa Marta we quickly identify the Casa de la Aduana or the Fuerte de El Morro on the bay. However, at the very entrance of the bay, on a hill that almost nobody climbs today, the Spanish built an artillery battery intended to block the passage of corsairs coming from the north. That point is what historical cartography records as the Fort of San Fernando, and the area where it was located is known in colonial documents as the Boca del Cerro or simply "the mouth of the bay."

Before continuing, it is important to clarify that if you search current maps for "Boca del Cerro" as a tourist destination, you will not find it. It is not a neighborhood, nor a theme park, and there is no ticket booth with that name. It is a historical and geographical designation that appears in colonial plans and in texts by samario historians, and today corresponds to the sector of hills and mangroves that separate the bay of Santa Marta from the lagoon complex of the Ciénaga Grande, very close to the Isla de Salamanca. The general context of the colonial fortifications of Santa Marta is as follows: the city was founded in 1525 by Rodrigo de Bastidas and became a strategic port for the Spanish Crown, which put it in the crosshairs of pirates, corsairs and enemy powers of Spain during the 16th, 17th and 18th centuries. To defend themselves, the Spanish built and rebuilt several defenses along the bay, among them the Fuerte de El Morro and smaller batteries on elevated points that served as watchtowers and as a first line of fire. The Fort of San Fernando belongs to that military logic: it was not a citadel, it was a surveillance and artillery post at the throat of the bay.

Timeline or historical milestones

The history of the defenses of Santa Marta is not linear nor is it full of exact confirmed dates for each battery. What is documented is the general pattern of attacks and responses:

• 16th century: Santa Marta suffers incursions by European corsairs. The city begins to fortify itself in an improvised manner, with palisades and surveillance points on the hills surrounding the bay.
• 17th century: The attacks intensify. Powers such as England, France and Holland finance corsairs seeking to plunder Spanish ports in the Caribbean. Santa Marta, with fewer resources than Cartagena, depends on coastal batteries and geography to defend itself.
• 18th century: This is the period of greatest construction activity in the samario fortifications. The Fuerte de El Morro and other batteries are reinforced. It is in this context that the installation of artillery on elevated points at the entrance of the bay is documented, among them the hill that dominates the southern mouth of the port, associated with the name of San Fernando.
• 19th century: With the wars of independence, the colonial fortifications lose their military function. Many are abandoned and reused as quarries for material or simply left exposed to the elements.
• 20th and 21st centuries: The urban growth of Santa Marta, El Rodadero and the road to Ciénaga transforms the landscape. The hills that were once military posts end up surrounded by mangrove, dry vegetation and settlements. Most of the smaller batteries disappear from the tourist map.

A key fact to understand why this fort "nobody visits": it was never a restored tourist attraction. Unlike the Castillo de San Felipe in Cartagena or even the Fuerte de El Morro in Santa Marta, which have signage and controlled access, the smaller batteries at the entrance of the bay were left in administrative oblivion. There is no visitor center, there is no officially marked trail and there is no ticket booth. That is precisely what attracts adventurous travelers and photographers: real ruins, without staging.

Key figures or events

Rodrigo de Bastidas and the founding of the port

Bastidas founded Santa Marta in 1525 and established the port as a departure point for merchandise to Spain. That commercial decision is what turned the city into a military target. Without a port, there are no pirates; without pirates, there is no fort. The entire samario defensive system, including the Fort of San Fernando, is born from that equation.

The corsairs of the Caribbean

The most famous names of Caribbean privateering are associated with Cartagena, Panama and Portobelo, but Santa Marta also suffered documented attacks. Francis Drake passed through the Caribbean of New Granada in the 16th century, and in the 17th and 18th centuries there were incursions by English, French and Dutch corsairs. The function of the Fort of San Fernando was simple: warn and fire. If a suspicious sail appeared on the horizon, the battery on the hill could cannon it before it entered the bay and give the city time to organize.

The Spanish military engineers

The fortifications of the Spanish Caribbean were designed by military engineers trained in Europe, many of them Italian and Spanish, who applied treatises on ballistics and defensive geometry. In Santa Marta, those engineers worked with limited resources and difficult terrain: dry hills, mangroves and an open bay. The Fort of San Fernando, in the logic of those plans, was one piece of a system, not an autonomous fortress.

The republican abandonment

After independence, the Republic of New Granada had neither interest nor budget to maintain colonial batteries. The fortifications of Santa Marta passed into civilian hands or simply fell into disuse. That abandonment is the key fact that explains the current state: walls of limestone and coral stone, rusted cannons at best, and vegetation that swallowed the access roads.

Current state

What remains today of the Fort of San Fernando

What remains are remnants of stone masonry, some sections of wall and platforms where the artillery was emplaced, covered by tropical dry forest vegetation. Do not expect a complete structure or a museum. It is a site of ruins, with free access but no services, and with an archaeological and scenic value more than architectural. If you go with expectations of a "restored castle," you will be disappointed; if you go with expectations of a "real military ruin on a hill with a view of the entire bay," it is exactly what you are looking for.

Important: there is no evidence of secret tunnels, underground vaults or hidden passageways in this sector. That type of story is a recurring urban myth in colonial fortifications, but in the case of the smaller batteries of Santa Marta there is no documentation to support it. What you see on the surface —walls, platforms, stone— is what there is.

How to actually get there

There are two practical routes, and neither is marked as a "tourist route to the Fort of San Fernando":

1. From El Rodadero: You can take the road that climbs toward the hills that separate El Rodadero from the bay of Santa Marta. It is an area of informal viewpoints and dirt roads. It is recommended to go with someone who knows the area, in a high-clearance vehicle or walking early in the morning. There is no direct public transport to the ruins.
2. Via the road to Ciénaga: The highway that connects Santa Marta with Ciénaga and Barranquilla borders the lagoon complex of the Ciénaga Grande and the Isla de Salamanca. From there you access sectors of mangrove and hills near the mouth of the bay. It is a route for those who have their own vehicle and a willingness to walk along a trail.

In both cases, the recommendation is to go in a group, with water, sunscreen, repellent and closed shoes. There are no bathrooms, no shops and cell signal is intermittent. It is recommended to check daylight hours before visiting, because returning at night along a trail is not safe.

Viewpoint and mangrove: birds and sunset without crowds

The true current attraction of this sector is not the ruin itself, but the observation point. From the hills at the entrance of the bay you have a complete view of Santa Marta, of El Rodadero in the background and of the open sea. It is a natural viewpoint, without railings or a café, but with a perspective that few tourists see because everyone stays in the Historic Center or on the beach.

The mangrove that surrounds the area, associated with the complex of the Ciénaga Grande de Santa Marta and the Isla de Salamanca, is habitat for water birds, herons, pelicans and frigatebirds. It is a vibrant ecosystem that contrasts with the history of war and defense that once marked this place.