Chibuene's earliest inhabitants were not mere farmers waiting for merchant ships. They fished for sharks and hunted sea turtles — subsistence strategies that archaeologists associate more closely with Swahili coast communities far to the north, near Kenya and Tanzania, than with the southern African interior. This northward affinity tells a story of cultural connection stretching up the East African seaboard, long before the Portuguese ever arrived. The people of Chibuene ate from the ocean and traded with the world. Glass beads, glazed and unglazed pottery, iron fragments, and shell ornaments fill the lower archaeological deposits, dating from the site's first phase of occupation between AD 600 and 1000. Some of the glazed ceramics match those found at Kilwa Kisiwani in Tanzania, though whether they were imported from Kilwa or produced locally remains an open question. What the evidence does make clear is that Chibuene was no isolated fishing village — it was a node in a trade web that extended 1,500 kilometers into the continental interior.

The glass beads are what make Chibuene remarkable in the archaeological record. Between 1995 and 2001, surveys of the lower occupation levels yielded 2,800 beads, most belonging to the Zhizo tradition — a type found at sites across southern Africa. But among them was something new: a distinct typology named the Chibuene series. These tubular beads, their ends rounded through reheating, matched only one other contemporary collection, from Nqoma in western Botswana, over a thousand kilometers away. Chemical analysis of the glass pointed to a Near Eastern origin for both series. Written sources from the fifteenth century record that ivory, animal skins, and enslaved people were exchanged for glass beads along this coast. The beads themselves became currency of a kind, flowing from Chibuene inland to the Shashe and Limpopo river regions, the Zimbabwe Plateau, and Botswana. For roughly four centuries, Chibuene served as one of the principal entry points through which the glasswork of the Middle East and South Asia reached the kingdoms of southern Africa.

Around AD 1200, something shifted. The ceramics in Chibuene's upper archaeological layers changed character. Imported glazed pottery disappeared, replaced by styles unmistakably linked to Manyikeni, an inland settlement roughly 160 kilometers to the southwest that had connections to the Great Zimbabwe civilization. Ovaloid vessels with shell-impressed motifs and graphite-decorated restricted vessels — distinctive Manyikeni forms absent from Chibuene's earlier layers — began to dominate the assemblage. Shell stamping replaced the earlier incised motifs of triangles, zigzags, and herringbone patterns. The transition suggests that Chibuene fell under Manyikeni's political or economic influence during this period. Crucibles found in the later deposits hint at gold processing, presumably melting gold obtained through trade with the Great Zimbabwe network. Mozambique has jointly nominated Chibuene and Manyikeni for the World Heritage Tentative List, recognizing their intertwined histories as coastal gateway and inland power.

Pollen evidence from the nearby lakes of Nhaucati and Xiroche reveals a lengthy drought between 1400 and 1700, peaking around 1700, that transformed the surrounding landscape from forest savanna mosaic to drier woodland. Throughout this climatic upheaval, and despite the decline of Indian Ocean trade at the end of the first millennium, Chibuene persisted. Its role evolved from international entrepot to regional connector, linking northern and southern coastal communities while maintaining its function as a bridge between the coast and the interior at Manyikeni. Contemporary farmers in the region still cultivate maize, sorghum, cassava, beans, and peanuts on the same coastal plain. The archaeological site has yielded its secrets slowly — through ceramics scored with the marks of shell edges, through beads whose chemistry maps ancient supply chains, through the bones of sharks caught by people who lived at the edge of two worlds.