Geographical Features of the Sahara Desert

The Sahara Desert, spanning approximately 9.2 million square kilometers across North Africa, is the largest hot desert on Earth. Its vast expanse includes a variety of landforms that have historically shaped human movement, resource access, and territorial claims. The Western Sahara dispute lies at the heart of this desert, making an understanding of its physical features essential.

Sand Seas and Dunes

The Sahara is famous for its ergs—vast seas of shifting sand dunes. The largest include the Erg Chech (spanning Algeria and Mauritania) and the Erg Sahara in the western part of the desert. These dune fields can reach heights of 300 meters and are constantly reshaped by prevailing winds. In Western Sahara itself, the terrain is predominantly rocky hamada (stone plateaus) and reg (gravel plains), with scattered ergs near the borders with Mauritania and Algeria. The lack of vegetation and extreme aridity make these areas nearly impassable except for well-adapted nomadic tribes and specialized vehicles.

Mountain Ranges and Plateaus

Within and around Western Sahara, several mountain ranges rise dramatically from the desert floor. The Tassili n’Ajjer range in southeastern Algeria features sandstone formations that hold prehistoric rock art. To the northeast, the Jebel Uweinat massif straddles Egypt, Sudan, and Libya and contains some of the last permanent water sources in the Sahara. In Western Sahara proper, the Zemmour plateau and the slopes of the Dhaya and Ma’den provide elevation that slightly moderates temperatures. These highlands occasionally receive rare rainfall that supports drought-resistant grasses and shrubs, vital for nomadic herding.

Water Resources and Oases

Surface water is almost nonexistent in the Sahara, but underground aquifers sustain scattered oases. The Nubian Sandstone Aquifer System and the North-Western Sahara Aquifer System are among the world’s largest fossil water reserves. In Western Sahara, wells near Smara, Laayoune, and Dakhla tap into these sources to support settlements and agriculture. Phosphate-rich rock formations along the coast—particularly the massive Bou Craa deposit—add economic significance to the desert’s geology. The interplay between scarce water, mineral wealth, and traditional land use remains a key factor in the dispute.

Colonial Legacies in Western Sahara

The modern conflict in Western Sahara cannot be understood without examining the colonial period, during which European powers carved up the region without regard for existing tribal or ethnic boundaries.

Spanish Sahara: 1884–1975

Spain established a protectorate over the coastal area known as Spanish Sahara in the late 19th century, formalizing it at the 1884 Berlin Conference. The colonial administration drew borders that cut across traditional territories of Sahrawi tribes—primarily the Reguibat, Oulad Delim, and Tekna. Sahrawi society was nomadic, moving between modern-day Morocco, Mauritania, Algeria, and the disputed territory. Spanish rule imposed fixed boundaries, disrupted seasonal migration routes, and introduced a cash economy based on phosphate mining and fishing. The Spanish authorities used a divide-and-rule policy, favoring some tribes over others, which left lasting social divisions.

The End of Colonial Control and the Madrid Accords

As Spain weakened under Francisco Franco’s final years, international pressure from Morocco and the United Nations prompted Spain to decolonize. In 1975, the International Court of Justice issued an advisory opinion stating that Western Sahara had not been a terra nullius (nobody’s land) and that ties of allegiance existed between Sahrawi tribes and the Sultan of Morocco, but these were insufficient for sovereignty. Days later, King Hassan II of Morocco organized the Green March—350,000 unarmed Moroccans crossed into Western Sahara, forcing Spain to negotiate the Madrid Accords. By February 1976, Spain withdrew, and Morocco and Mauritania partitioned the territory.

The Birth of the Polisario Front and Sahrawi Nationalism

Even before Spain left, Sahrawi nationalists formed the Polisario Front (Popular Front for the Liberation of Saguia el-Hamra and Río de Oro) in 1973. With support from Algeria, the Polisario declared the Sahrawi Arab Democratic Republic (SADR) in 1976 and launched a guerrilla war against Moroccan and Mauritanian forces. Mauritania gave up its claim in 1979, leaving Morocco in control of approximately 80% of the territory, including the coastline and phosphate mines. The Polisario retreated to refugee camps near Tindouf, Algeria, where tens of thousands of Sahrawi still live today.

The Emergence of the Dispute: 1975–1991

The period from 1975 to 1991 saw intense armed conflict and diplomatic maneuvering. Moroccan forces built the Moroccan Wall—a 2,700-kilometer sand berm fortified with minefields, watchtowers, and artillery positions—to separate the Moroccan-controlled “useful triangle” from the Polisario-controlled eastern and southern areas. The Sahrawi guerrilla tactics included hits on Moroccan supply convoys and outposts, while the Royal Moroccan Air Force retaliated with bombings. The war caused tens of thousands of casualties and forced many Sahrawi to flee.

The Ceasefire of 1991 and MINURSO

Pressure from the United Nations and the Organization of African Unity led to a UN-brokered ceasefire in September 1991. The United Nations Mission for the Referendum in Western Sahara (MINURSO) was established to oversee a referendum on self-determination. However, disagreements over voter eligibility—Morocco insisted on including tens of thousands of Moroccans who had moved into the territory after 1975, while the Polisario argued for a census based on colonial records—stalled the process. MINURSO’s mandate has been renewed repeatedly, but no referendum has ever been held.

The Stalemate and International Involvement

For over three decades, the conflict has remained frozen, with Morocco controlling the majority of the territory and offering an autonomy plan, while the Polisario insists on the right to independence. International actors have played significant roles in both trying to resolve the dispute and in shaping its dynamics.

UN Efforts: Baker Plan and Missed Opportunities

The most notable UN initiative was the Baker Plan, developed by former US Secretary of State James Baker. The first version (2000–2002) proposed a referendum with limited voter eligibility, but Morocco rejected it. A second version (2003) offered five years of autonomy followed by a referendum. Morocco initially accepted, then retracted. France and the United States blocked further pressure on Morocco in the Security Council, leaving the plan defunct. Since then, successive UN envoys have failed to achieve breakthroughs.

Morocco’s Autonomy Proposal and International Recognition

In 2007, Morocco proposed a broad autonomy plan for Western Sahara under Moroccan sovereignty, with local governance, economic development, and control over resource exploitation. The Polisario rejected it as insufficient. However, the autonomy model has gained traction among some nations. The United States under President Donald Trump recognized Moroccan sovereignty over Western Sahara in exchange for Morocco normalizing relations with Israel (the 2020 Abraham Accords). Several African and Arab states have opened consulates in Laayoune and Dakhla. But most European countries and the African Union continue to support a negotiated settlement leading to self-determination.

Algeria’s Central Role

Algeria is the Polisario’s main backer, providing military aid, diplomatic support, and hosting the Sahrawi refugee camps near Tindouf. The conflict is often seen as a proxy contest between Morocco and Algeria for regional hegemony. Algeria’s closure of its border with Morocco in 1994 and sporadic tensions over the Trans-Saharan pipeline project underscore the deep rivalry. Any genuine solution would require Algeria’s involvement as a key stakeholder.

Contemporary Challenges and Future Possibilities

The Western Sahara dispute remains one of the longest-running unresolved territorial conflicts in the world. Several factors keep it from moving toward resolution.

Humanitarian Crisis in the Refugee Camps

The Sahrawi refugee camps near Tindouf (Algeria) have existed since the 1970s, housing around 100,000 to 170,000 people. They depend on international aid distributions, mainly from the UN Relief and Works Agency (UNHCR) and the World Food Programme. Living conditions are poor, with limited access to clean water, healthcare, and education. The camps are also a recruitment base for the Polisario’s military wing, and reports of human rights abuses—including restrictions on movement and lack of democratic governance—have drawn criticism. The stalemate leaves generations without a viable homeland.

Resource Disputes: Phosphates and Fisheries

The Bou Craa phosphate mine, exploited by Morocco’s OCP Group, produces high-grade phosphate used in fertilizers. The European Union includes phosphates from Western Sahara in trade agreements, but with a duty to ensure Sahrawi benefit. Fisheries along the rich Atlantic coast are another source of tension: the EU-Morocco fisheries partnership includes waters off Western Sahara, but legal challenges by the Polisario have questioned its legality. The ICJ advisory opinion of 2018 on fishing rights found that Western Sahara’s resources are subject to a legal regime of non-self-governing territory, meaning the Sahrawi people must consent to exploitation. This has led to a patchwork of regulations and ongoing litigation.

Security Implications

The frozen conflict has security ramifications for the Sahel and North Africa. The Polisario’s military presence in eastern areas forms a buffer zone that occasionally sees clashes—like in November 2020 when Morocco broke the long-standing Guerguerat buffer zone to reopen a trade road to Mauritania, triggering small-scale fighting. The presence of landmines throughout the territory has caused civilian casualties and limits development. Additionally, the region is vulnerable to infiltration by militant groups linked to Al-Qaeda in the Islamic Maghreb and the Islamic State, although both the Polisario and Morocco deny harboring extremists.

Diplomatic Prospects

As of 2025, the dispute shows no signs of a breakthrough. Morocco continues to push for recognition of its sovereignty, while the Polisario insists on a referendum. The African Union maintains the SADR as a member state. The UN Security Council remains divided: the United States and France tend to lean toward Morocco’s position, while Russia and several African countries call for self-determination. The international community has largely accepted the status quo, focusing on humanitarian aid and conflict management rather than resolution. However, shifting alliances—including the normalization between Morocco and Israel—could reshape the diplomatic landscape.

Ultimately, the Western Sahara dispute is a complex interplay of geography, colonial history, resource competition, and regional power politics. The harsh but resource-rich desert features that define the territory will continue to influence the competing claims. Until a credible political solution acceptable to all parties emerges—one that respects the rights of the Sahrawi people while accounting for Morocco’s security and economic interests—the Western Sahara conflict will remain a serious challenge to stability and development in the region.

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