# The Saloum Delta — islands built out of two thousand years of dinner Canonical: https://sockmonkey.com/places/saloum-delta (this is a plain-text copy of that page) Source: https://sockmonkey.com/places/saloum-delta Publisher: SockMonkey.com (https://sockmonkey.com) Part of: The Field Guide - https://sockmonkey.com/places/ Cite as: SockMonkey.com - sockmonkey.com Last reviewed: 24 October 2026 - **Where:** Fatick Region, western Senegal, where the Saloum meets the Atlantic - **Coordinates:** 13.8353° N, 16.4986° W - **Biome:** Mangrove, brackish channels, mudflat and dry forest - **Shell mounds:** 218 recorded, grouped in 96 sites, 28 carrying burial tumuli - **Oldest dated:** About 400 BC, by radiocarbon - **Status:** UNESCO World Heritage, 2011 - **Best visited:** December–June, the dry season ## The short answer The Saloum Delta is the mangrove delta where the Saloum, Diombos and Bandiala rivers reach the Atlantic in western Senegal, south of Dakar and just north of the Gambian border. Its brackish channels, called bolons, thread between more than two hundred main islands and islets. UNESCO inscribed 145,811 hectares of it in 2011 — not for the mangroves, although they are part of it, but as a cultural landscape. Across the property, archaeologists have recorded 218 mounds made of discarded shellfish shells, the largest several hundred metres long, and 28 of them carry burial tumuli. The oldest mounds have been dated by radiocarbon to around 400 BC. ICOMOS says the large-scale gathering that built the mounds went on for about two thousand years, until around 1600 AD. Part of the delta has been a national park since 1976, and the women of its villages still gather cockles and mangrove oysters by hand every dry season. ## Why it's worth knowing A mangrove delta seen from a boat is one of the most convincing pictures of untouched nature there is. Water, roots, birds, and low islands under a very big sky. Some of those islands are not natural. They are middens — heaps of cockle and oyster shells thrown down by the people who ate what was inside, for century after century, until the heap was big enough to stand on, then to live on, then to grow trees. ICOMOS, in its evaluation for UNESCO, describes the process as deliberate: the shells were piled so as not to block the delta’s channels and to raise dry points in ground that floods. The mounds are, in its phrase, man-made structural points within the delta’s shifting territory. You can find them from space. Baobabs grow on the mounds, where the ground is raised and limy, and do not grow in the mangrove around them, so a baobab standing in a delta is very often a signpost to a shell mound. ICOMOS notes that they are clearly identifiable on satellite images. And a mound built from meals became, on 28 of them, a burial ground. From the eighth century AD onwards, and through to the sixteenth, people buried their dead in tumuli — shell cairns — raised on top of the older heaps. Over nine hundred tumuli have been identified. Some of these places still carry rites and prohibitions for the people who live beside them. So the delta that looks like a landscape without people is, in part, a record of human appetite more than two thousand years long — and the harvest that made it still goes on, in the baskets of the women who work the mudflats every dry season, although ICOMOS notes that today’s shells add relatively little to the mounds and go straight into building. ## The field notes ### Two hundred and eighteen heaps The standard inventory, the Thilmans inventory of 1997, records 218 shell mounds within the property, grouped into 96 mapped sites. Most sit in the seaward part of the Saloum islands and throughout the Betenti islands in the south, in clusters of up to fifteen. Around twenty of them are more than a hundred metres long. The largest are measured in hundreds: Dioron Boumak runs to around 400 to 500 metres, and Ndiamon-Badat to about 800. Most stand a few metres high; the most imposing reach eight to twelve. Shellfish gathering on this coast is far older than the Saloum mounds. ICOMOS traces it through Neolithic sites in Western Sahara and Mauritania dated to 4000–4700 BC and down the coast to the mouth of the Senegal River before it reached the Saloum, where the oldest mounds so far dated go back to about 400 BC. ICOMOS describes the whole accumulation as a 2,000-year cultural process, which ran in a regular and intense way until around 1600 AD. ### The mounds with graves on them Twenty-eight of the mounds carry tumuli: low shell cairns over the remains of one person or several. Most of those mounds have a few tens of them. Three have more than a hundred — Dioron Boumak with 125, Ndiamon-Badat with 149, and Tioupane, near Falia, with 222 — and those have an undulating, rolling surface that is visible from the water. Excavations, the first of them at Dioron Boumak and Dioron Boundaw in 1939, have recovered pottery and funerary objects now held mainly in institutions in Dakar. On Dioron Boumak a ring of baobabs forms the tomb of a Wolof griot, Bak Kawl. ICOMOS records that rites and prohibitions attached to these burial grounds are occasionally still observed by the people who live in the delta. That is the practical point for a visitor: the most famous mounds are cemeteries, and whether and where to walk on one is a question for the boatman, not for the map. ### Dug out for concrete The mounds had one more use, and it nearly finished some of them. From the late nineteenth century through the twentieth, the region needed building material — lime for kilns, aggregate for concrete, fill for roads — and a heap of ancient shell sitting beside a navigable channel is a quarry you can load straight into a canoe. ICOMOS records that at least twenty mounds were intensively exploited and that one, Baboura, has disappeared entirely. Extraction fell off after conservation measures in the 1970s and 1980s and is now banned. In its 2011 evaluation ICOMOS still reported that illegal extraction seemed to continue. A two-thousand-year-old monument made of discarded shells turns out to have exactly the weakness you would expect: it is very easy to take away. ### Who gathers now The harvest that built the mounds has not stopped, although the mound-building has: ICOMOS says shells from today’s gathering are mostly used directly for construction. Today the gathering and processing of shellfish is done by women, and fishing by men; ICOMOS notes that when this division of labour began cannot be known. The women work the mudflats and the edges of the mangrove in the dry season, from December to June, with dugout canoes, plant-fibre baskets and knives — now with gloves, rubber boots and plastic buckets as well. Gathering zones and seasons are respected so that the beds recover. Mangrove oysters are also grown on stakes. The processing is old enough to have its own archaeology. Shellfish and fish were dried or smoked for keeping and trade, and a local pottery, now called Dioron-Boumak ware, was used to store them. In the early sixteenth century the Portuguese writer Valentim Fernandes described people here processing molluscs and selling them in locally made earthenware pots. The property is not empty country. ICOMOS gave its population as about 55,000 in a 2009 projection, living mainly in villages such as Bassoul, Dionewar, Djirnda and Toubacouta. Most of the delta’s people are Serer, whose ancestors, according to the same evaluation, arrived from the north in the eleventh century. ### How big it is depends on who is measuring This is a small matter, and it is a useful one, because four respectable figures for the size of the same place disagree. The inscribed World Heritage property is 145,811 hectares, with a buffer zone of 78,842. UNESCO’s own short description of it, on the same page, calls it a 5,000 square kilometre property — more than three times as large. Senegal’s Saloum Delta National Park, established in March 1976, covers about 76,000 hectares. Wikipedia gives the delta as a whole as 180,000 hectares, which is also the figure IUCN, in its 2011 evaluation, gives for the UNESCO Biosphere Reserve designated here in 1980 (ICOMOS dates the reserve to February 1981). None of these is wrong about what it measures. They are measuring different things under one name, and this entry uses the figure attached to the thing it is describing. **A relic from the Saloum Delta** A baobab on a heap of shells. Out in the mangrove, a single enormous tree stands on a low island whose ground crunches underfoot, pale with broken cockle and oyster. The tree is there because the island is; the island is there because people ate here, and threw the shells down, and kept doing it for two thousand years. On some of these islands the heap was later used to bury the dead. The tree is the easiest way to find one. ## Getting there How to get there. Fly into Dakar’s Blaise Diagne International Airport, then go south by road. The usual bases on the delta’s edge — Ndangane and Palmarin in the north, Foundiougne on the Saloum, Toubacouta in the south — are a few hours’ drive, depending on which and on the traffic leaving Dakar. Hired cars with drivers and shared bush taxis both make the trip. On the water. The delta is travelled by pirogue, the long painted wooden boat of the Senegalese coast, hired with a boatman from any of those bases, for a half-day or a full day among the bolons. Many of the island villages have no road at all. Ask specifically to see a shell mound and a baobab on one; boatmen from Toubacouta and Dionewar know which are open to visitors and which are burial grounds to be seen from the boat. When to go. The dry season, which ICOMOS gives as December to June, is the comfortable time and the time the women are out on the mudflats. In the rains the delta is at its greenest and the tracks at their worst. Where to stay. Small lodges and campements, many of them reachable only by boat, on Mar Lodj and around Toubacouta, Ndangane and Palmarin. Book the transfer when you book the bed. What to bring. Cash in West African CFA francs; card payment thins out quickly south of Dakar. Something to cover your head on the water. And a willingness to eat grilled oysters out of the shell, which is the most direct way available to take part in the site’s central tradition. ## Common questions #### What are the shell mounds of the Saloum Delta? They are middens: heaps of discarded cockle and mangrove oyster shells accumulated by the people of the Saloum Delta in Senegal over more than two thousand years. The 1997 Thilmans inventory records 218 of them within the UNESCO property, grouped in 96 sites. The largest, such as Dioron Boumak and Ndiamon-Badat, are several hundred metres long and up to eight to twelve metres high. #### How old are the Saloum shell mounds? Radiocarbon dating puts the oldest mounds in the Saloum Delta at around 400 BC, according to the ICOMOS evaluation prepared for UNESCO in 2011. Burial tumuli were added on top of some mounds from the eighth century AD through to the sixteenth. UNESCO describes the accumulation as a cultural process lasting two thousand years. #### Are the islands in the Saloum Delta man-made? Some are. ICOMOS describes the Saloum Delta shell mounds as having formed man-made islets, and considers their placement deliberate: shells were piled so as not to block the delta’s channels and to create dry ground in land that floods. Most of the delta’s more than two hundred islands are natural mangrove and sand, and the shell-mound islets are scattered among them. #### Why are there baobabs on the Saloum shell mounds? Baobabs grow on the raised, dry ground of the Saloum Delta’s shell mounds and not in the surrounding mangrove, which makes them a visible marker of where the mounds are. ICOMOS notes that the mounds are clearly identifiable on satellite images. On Dioron Boumak a ring of baobabs forms the tomb of the Wolof griot Bak Kawl. #### Are people buried in the Saloum shell mounds? Yes. Twenty-eight of the Saloum Delta’s 218 shell mounds carry burial tumuli, low shell cairns over one or more individuals, and more than nine hundred tumuli have been identified. Tioupane near Falia has 222, Ndiamon-Badat 149 and Dioron Boumak 125. ICOMOS reports that rites and prohibitions attached to these burial grounds are occasionally still observed. #### Were the Saloum shell mounds damaged? Yes. From the late nineteenth century through the twentieth, Saloum Delta shell mounds were quarried by canoe for lime kilns, concrete aggregate and fill. ICOMOS records at least twenty intensively exploited and one, Baboura, destroyed. Extraction is now banned, though the 2011 ICOMOS evaluation reported that illegal digging appeared to continue. #### Who harvests shellfish in the Saloum Delta today? Women. In the Saloum Delta the gathering and processing of cockles and mangrove oysters is done by women during the dry season, December to June, using dugout canoes, plant-fibre baskets and knives, while men fish. ICOMOS notes that when this division of labour began is not known. Harvest zones and seasons are managed so that shellfish beds recover. #### How big is the Saloum Delta? It depends which Saloum Delta is meant. The UNESCO World Heritage property is 145,811 hectares with a 78,842-hectare buffer zone, although UNESCO’s short description gives 5,000 square kilometres. Saloum Delta National Park, created in March 1976, covers about 76,000 hectares. Wikipedia gives the delta as a whole as 180,000 hectares, the same figure IUCN gives for the UNESCO Biosphere Reserve. What to pack: the Small islands & boats kit ## Related places Joal-Fadiouthabout 50 km away · both tagged living tradition Îles de la Madeleine (Senegal)about 140 km away · same region Lac Roseabout 140 km away · same region Chã das Caldeirassame region · same access level (2) Santo Antãosame region · same access level (2) Notes on sources. This entry draws on UNESCO’s World Heritage listing for the Saloum Delta and on the ICOMOS advisory body evaluation of the nomination (2011), which is the source for the Thilmans inventory figures (218 mounds in 96 sites, 28 with tumuli, over 900 tumuli), for mound dimensions, for the radiocarbon date of about 400 BC, for the eighth-to-sixteenth-century tumuli, for the quarrying of the mounds and the loss of Baboura, for the present division of shellfish work, for Valentim Fernandes’s sixteenth-century description, and for the 2009 population projection; on UNESCO’s statement of Outstanding Universal Value for the two-thousand-year accumulation; and on published reference material for the national park’s 1976 establishment and area. Area figures are reported side by side rather than reconciled: 145,811 ha for the inscribed property, 5,000 km² in UNESCO’s own short description, about 76,000 ha for the national park and 180,000 ha for the delta (Wikipedia) or the Biosphere Reserve (IUCN). The claim that the mounds were placed deliberately is ICOMOS’s interpretation and is attributed to it on the page. The oldest date applies to the mounds dated so far, not to every mound. Travel advisory: the United States has Senegal at Level 1, exercise normal precautions; the State Department’s country page reports sporadic armed banditry and residual landmines in the Casamance region of southern Senegal, which lies south of the Gambia and does not include the Saloum Delta. Checked 28 September 2026. Re-checked on 24 October 2026: the ICOMOS evaluation (whc.unesco.org advisory body evaluation 1359, PDF, which also carries IUCN’s evaluation) was read directly, and every inventory figure, dimension, date and count on this page was found in it as stated. Three changes followed. ICOMOS says the large-scale gathering that built the mounds ran for about 2,000 years until around 1600 AD and that today’s shells mostly go straight into building, so the page no longer says the mound-making process is still going on. The “2,000-year cultural process” is ICOMOS’s phrase and is now credited to it (UNESCO’s own list page refused the request, so its 5,000 km² short description could not be re-read). ICOMOS gives the dry season as December to June, so the best-visited months now follow it (this entry had said November to May). The 180,000 ha figure is Wikipedia’s for the delta and IUCN’s for the Biosphere Reserve, and the 1976 park date is ICOMOS’s (March 1976). The distance from Dakar and the drive time were not found in a source read and are now given without figures. The State Department feed still shows Senegal at Level 1, dated 1 December 2025 (snapshot of 23 October 2026). Written and fact-checked by SockMonkey.com. Last reviewed 24 October 2026.