By Dr Ebrima Ceesay
Recent developments along the Senegal-Gambia border, particularly the incident at Bulock, have drawn renewed attention to the ongoing border densification programme between Senegal and The Gambia.
Public discussion, especially among Gambians, has sometimes blurred the distinction between a dispute over sovereignty and a technical border-marking exercise. Understanding that distinction is essential to appreciating both the importance of the programme and the need to complete it.
First, let me explain the term “densification” which is often used in the context of the Senegal-Gambia border.
Well, in the context of the Senegal-Gambia border, densification is a technical border demarcation process that involves identifying sections of the international boundary where border pillars are missing, damaged, or too widely spaced, and installing additional boundary markers to make the already agreed border more clearly visible on the ground.
Densification does not mean creating a new border, redrawing the international boundary, or transferring territory from one country to another.
Rather, densification is a process of strengthening and clarifying the physical demarcation of an existing border whose legal status has already been established through historical treaties and recognised by both governments.
For Senegal and The Gambia, the international boundary was largely defined during the colonial period through agreements between Britain and France. Since independence, both countries have accepted this boundary as the legal international border.
However, many of the original boundary pillars have deteriorated, disappeared, or become difficult to locate over time. In some places, the distance between existing markers is considerable, making it difficult to determine the exact location of the border on the ground.
The purpose of the densification programme is therefore to identify missing or damaged boundary pillars; verify the border using modern surveying and geospatial technology; install additional boundary markers between existing pillars; accurately record the geographic coordinates of each marker; and ensure that both Senegal and The Gambia recognise and jointly maintain the same physical boundary.
The programme is being carried out jointly by technical experts from both countries and covers border communities across Gambia’s West Coast, North Bank, Central River, and Upper River Regions, together with their corresponding localities in Senegal.
Importantly, densification should not be confused with a sovereignty dispute.
We must be more nuanced here. A sovereignty dispute occurs when neighbouring states disagree over ownership of territory or the legal location of an international boundary.
In contrast, the Senegal-Gambia densification programme is based on a boundary that both countries already recognise. The exercise concerns the physical marking of the border, not the legal ownership of land.
Most of the areas involved are therefore not disputed in terms of sovereignty. Instead, they are locations where the precise position of the agreed boundary needs to be more clearly marked to prevent misunderstandings involving farmland, roads, villages, grazing areas, and security installations.
The July 2026 Bulock incident demonstrated why densification is important. It illustrated how uncertainty over the exact location of a boundary marker or security fence can lead to local tensions and diplomatic concerns, even where there is no disagreement over national sovereignty.
Completing the densification programme will help reduce the likelihood of such incidents by providing a clearly surveyed, jointly verified, and accurately marked international boundary.
In essence, the Senegal-Gambia border densification programme is a cooperative confidence-building exercise. Its purpose is not to change the border but to ensure that an already agreed border is visible, accurately documented, and jointly managed, thereby strengthening bilateral relations and providing greater certainty for the communities that live along it.
The border between The Gambia and Senegal is approximately 740 kilometres (460 miles) long and is one of Africa’s most distinctive international boundaries. The Gambia is almost entirely surrounded by Senegal, except for its Atlantic coastline.
Unlike many international borders that follow rivers, mountain ranges, or other prominent natural features, much of the Senegal-Gambia boundary was established during the colonial period through agreements between Britain and France. Those agreements defined the legal boundary that both independent states inherited and continue to recognise today.
Over time, however, many of the physical boundary markers have deteriorated, disappeared, or become difficult to locate. Consequently, both governments agreed in 2015 to undertake a joint border densification programme, reaffirming their commitment during the June 2026 Presidential Council meeting to complete the exercise.
The programme is not intended to redefine the international boundary but rather to make the already agreed boundary more visible, accurate, and easier to administer. This distinction is critical.
A sovereignty dispute arises when neighbouring states disagree over ownership of territory or over where the international boundary should legally lie. Such disputes involve competing territorial claims and often require political negotiations, arbitration, or judicial settlement because the states do not agree on the boundary itself.
The Senegal-Gambia border situation is fundamentally different. There is so much misinformation being spread all over social media to heighten tensions between two neighbouring countries
Yet it must be emphasised that the sovereignty of the territories on either side of the border is already well established through historical treaties, official maps, archival records, and decades of bilateral recognition.
We have all these documents in our archives at the University of Birmingham. In short, neither Senegal nor Gambia is attempting to redraw the border or acquire territory from the other. The issue is not ownership; it is the precise physical identification of an already recognised boundary.
This is what densification means. To reiterate, densification is a technical surveying exercise that identifies sections where boundary pillars are missing, damaged, or too widely spaced and installs additional markers between existing pillars.
Using modern surveying technology and geospatial mapping, technical experts from both countries jointly verify the boundary and ensure that the physical markers accurately correspond to the legally recognised international border.
In practice, most of the areas or regions affected by the programme are not disputed in terms of sovereignty. Rather, they are places or regions where the exact line on the ground needs to be more clearly marked to avoid misunderstandings involving farmland, village boundaries, roads, grazing areas, and security installations.
For communities living along the frontier, a difference of only a few metres can determine which side of the border a farm, pathway, or public facility falls on, even though neither country disputes the sovereignty of the territory itself.
Areas covered by the densification programme
The recent densification programme extends across several Gambian administrative regions and their corresponding localities in Senegal, reflecting the objective of creating a continuous, clearly marked international boundary from the Atlantic coast to the eastern end of the country.
West Coast Region (Foñi Area)
The Foni area has received particular attention in recent months because it includes Bulock (Bullock), where the July 2026 border incident occurred. Key Gambian communities include Bulock and Darsilami.
These villages lie near the Foñi district along Senegal’s southern frontier. The area contains military installations, agricultural land, and communities whose residents regularly cross the border for trade, farming, and family visits.
The fence dispute involving the Bulock military installation demonstrated how uncertainty over the precise location of a boundary marker can create unnecessary diplomatic and security tensions, even where there is no disagreement about national sovereignty.
North Bank Region (NBR)
Along the northern bank of the River Gambia, the Senegalo-Gambian Joint Boundary Commission conducted sensitisation campaigns in communities including Kerr Jane, Ginack Kajata, Kerr Pateh, and Mbap Anglais.
These communities maintain longstanding economic and family ties with neighbouring Senegalese villages. Clearly marked boundary pillars are therefore essential for farming, local commerce, and the movement of residents who have traditionally interacted across the frontier.
Central River Region (CRR)
The Central River Region includes several communities participating in the densification exercise Kerr Alajie Malick, Jimbala, and Panchang.
Following the Bulock incident, reports also highlighted Jimbala Kerr Musa, where local farmers indicated that uncertainty over the exact boundary affected access to farmland and raised concerns about future agricultural activities.
Upper River Region (URR)
Further east, the programme extends to communities such as Kerr Yerore and Saré Ngai.
This section of the frontier is particularly important for agriculture, livestock movement, and regional trade between eastern Gambia and southeastern Senegal. Clear boundary demarcation provides certainty for farmers, pastoralists, and traders who depend upon predictable access to land and transport routes.
Corresponding communities in Senegal
The densification programme is a joint undertaking involving communities on both sides of the border. Public sensitisation exercises have therefore also been conducted in neighbouring Senegalese villages, including Keur Alassane Diallo, Djinak Kobé, Tawfeeq, and Mbap Française.
These activities are intended to ensure that residents understand the purpose of the densification exercise, the methodology used by the survey teams, and the placement of new boundary pillars.
Community engagement is an important component of the programme because local residents are often the first to observe changes to boundary markers and can help preserve them over time.
The question arises: Why do these areas matter?
The border communities involved in the programme are socially, culturally, and economically interconnected. Residents commonly cultivate farmland situated close to the international boundary; trade in local markets on both sides of the border; move livestock seasonally across traditional grazing routes; maintain family relationships that extend across the frontier; and share ethnic and linguistic ties, particularly among the Mandinka, Jola, Fula, and Wolof communities.
Because many boundary pillars were installed decades ago, some have deteriorated, been displaced, or disappeared altogether. This can create uncertainty regarding the precise location of the legal boundary on the ground, even though the legal boundary itself remains undisputed.
The densification programme between The Gambia and Senegal seeks to eliminate that uncertainty through joint surveying and the installation of additional boundary markers recognised by both governments.
The Bulock incident serves as a reminder of why this technical work matters. It illustrates how even a relatively small ambiguity concerning the location of a boundary marker or security installation can have diplomatic and local consequences. Such incidents are regrettable, but they also reinforce the importance of completing the densification programme in a transparent, coordinated, and cooperative manner.
Rather than signalling a territorial dispute, the programme demonstrates the opposite. It reflects the fact that Senegal and Gambia already share a common understanding of where their international boundary lies and are working together to ensure that this understanding is accurately reflected on the ground. It is a confidence-building exercise between two neighbouring states that have chosen technical cooperation over confrontation.
Completing the densification programme should therefore be viewed as an investment in peace, certainty, and effective border management. By making an already agreed boundary visible, verifiable, and jointly administered, both countries can reduce the likelihood of misunderstandings, strengthen bilateral relations, improve security coordination, and provide border communities with the confidence to farm, trade, travel, and live without uncertainty.
If managed carefully and completed as originally envisaged, the border densification programme will not alter the Senegal-Gambia frontier. Instead, it will reinforce the long-standing legal boundary that both nations recognise while helping to ensure that avoidable misunderstandings such as the Bulock incident become far less likely in the future.
Finally, the list of areas and regions to be covered under the Densification Programme being implemented jointly by Senegal and The Gambia through the Senegalo-Gambian Joint Boundary Commission is far more extensive than the locations identified in my article.
Dr Ebrima Ceesay is a Gambian academic based in the United Kingdom.