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This rapid communication describes a lithic blade that was recently recovered during excavations in the Velondriake Marine Protected Area in southwest Madagascar. This represents the only recorded archaeological lithic blade recovered from southwest Madagascar. The blade was recoveredin situat a depth of 1.66 m, a deposit dating to between 750 and 1200 BP at site G134, adjacent to the modern village of Antsaragnasoa. While similar in material choice (translucent-brown chert) and morphology (parallel-sided blade) to other lithics recovered at the northern sites of Ambohiposa and Lakaton’i Anja, it is significantly larger than other recorded lithics on Madagascar. More research is required but this finding suggests that lithic technology may have been more widespread on the island, particularly among coastal communities, than previously thought.

In this paper, we advocate a collaborative approach to investigating past human–environment interactions in southwest Madagascar. We do so by critically reflecting as a team on the development of the Morombe Archaeological Project, initiated in 2011 as a collaboration between an American archaeologist and the Vezo communities of the Velondriake Marine Protected Area. Our objectives are to assess our trajectory in building collaborative partnerships with diverse local, indigenous, and descendent communities and to provide concrete suggestions for the development of new collaborative projects in environmental archaeology. Through our Madagascar case study, we argue that contemporary environmental and economic challenges create an urgency to articulate and practice an inclusive environmental archaeology, and we propose that environmental archaeologists must make particular efforts to include local, indigenous, and descendent communities. Finally, we assert that full collaboration involves equal power sharing and mutual knowledge exchange and suggest an approach for critical self-evaluation of collaborative projects.

Despite decades of archaeological research, roughly 75% of Madagascar's land area remains archaeologically unexplored and the oldest sites on the island are difficult to locate, as they contain the ephemeral remains of mobile hunter/forager campsites. The known archaeological record is therefore biased toward later sites, especially sites dating to the second millennium AD, following the expansion of Indian Ocean trading networks. Systematic archaeological investigations are required to address these biases in the known archaeological record and clarify the island's early human history, but funding limitations, logistical and time constraints in surveying large areas and a relatively small number of active field archaeologists present substantial barriers to expansive areal survey coverage. Using theoretical models derived from human behavioral ecology (i.e., ideal free distribution, optimal foraging theory) in conjunction with freely available remote sensing data, we illustrate how archaeological survey of Madagascar's landscapes can be rapidly expanded, more effectively target early archaeological deposits, and address questions about the island's settlement. This study illustrates the potential for theoretically-driven satellite-based remote sensing analysis to improve our understanding of the archaeological record of the world's fourth largest island.

Supplemental Material for Toward a just and inclusive environmental archaeology of southwest Madagascar by Kristina Douglass, Eréndira Quintana Morales, George Manahira, Felicia Fenomanana, Roger Samba, Francois Lahiniriko, Zafy Maharesy Chrisostome, Voahirana Vavisoa, Patricia Soafiavy, Ricky Justome, Harson Leonce, Laurence Hubertine, Briand Venance Pierre, Carnah Tahirisoa, Christoph Sakisy Colomb, Fleurita Soamampionona Lovanirina, Vanillah Andriankaja and Rivo Robison in Journal of Social Archaeology