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Prospect Farm and the Middle and Later Stone Age Occupation of Mt. Eburru (Central Rift, Kenya) in an East African Context

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Abstract

Located within the Nakuru-Naivasha basin on the northern slope of Mt. Eburru, the open-air site of Prospect Farm (Central Rift, Kenya) is one of the few East African sites that have yielded a stratigraphic sequence containing archaeological levels dating from the late Middle Pleistocene to the Holocene. Excavations at the site by Barbara Whitehead Anthony and Glynn Isaac in 1963–1964 exposed Pastoral Neolithic (Stone Bowl culture) and Later Stone Age (LSA; Kenya Capsian) levels overlying four Middle Stone Age (MSA) levels attributed to the Prospect Industry, a local expression of the Kenya Stillbay. This paper integrates the information currently available for the site and discusses its relevance in a wider East African context. Furthermore, it presents the results of a density survey completed in 2014, mapping the spatial distribution of artifacts along the northern slope of Mt. Eburru and providing data on the landscape setting of the site. The survey identified marked differences in the distribution of diagnostic MSA vs. LSA artifacts: whereas MSA finds cluster at two particular mid-altitude locations (2,102–2,108 m and 2,138–2,140 m a.s.l.) corresponding to the position of Anthony’s Localities I and II, LSA finds tend to show a much broader spatial distribution including both higher and lower altitudes.

Résumé

Situé dans le bassin de Nakuru-Naivasha sur la pente nord du Mont Eburru, le site de plein air de Prospect Farm (Rift Central, Kenya) est un des rares sites d’Afrique de l’Est qui a fourni une séquence stratigraphique contenant plusieurs niveaux archéologiques datant de la fin du Pléistocène Moyen jusqu’à l’Holocène. Les fouilles de Barbara Whitehead Anthony et Glynn Isaac en 1963–1964 ont exposé des niveaux du Néolithique pastoral et du Paléolithique supérieur (Later Stone Age [LSA]; Capsien du Kenya) au-dessus de quatre niveaux du Paléolithique moyen (Middle Stone Age [MSA]) attribués à la « Prospect Industry ». Celle-ci représente une expression locale du Kenya Stillbay. Cet article intègre les informations disponibles sur le site et discute son importance dans un contexte géographique plus large. Une prospection de densité a été menée en 2014, afin d’étudier la distribution spatiale des artéfacts le long de la pente nord du Mont Eburru. Cette prospection, dont les résultats sont présentés ici, a identifié des différences significatives entre la distribution des artéfacts diagnostiques du MSA et ceux du LSA: Alors que les artéfacts du MSA sont concentrés sur deux zones à une altitude moyenne (2102–2108 m et 2138–2140 m a.s.l.) qui correspondent à la position des fouilles d’Anthony, les artéfacts du LSA présentent une dispersion spatiale plus large qui inclus aussi les altitudes plus hautes et plus basses.

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Acknowledgements

We thank the chief of Kongasis sub-location, Mark Chipchome, for his permission to conduct fieldwork at the site; the National Museums of Kenya, the British Institute in Eastern Africa (BIEA); and Tom Cholmondeley for their logistical support, as well as the 2014 (Cecilia Ngugi [NMK], Sammy Olishimbi, Stephen Leboi and Harrison Lihemo Boge) and 2016 (Henri Mwengi [NMK], Joseph Njuguna, David Tuta, Roja Kodonyo, Leonard Ruto, James Otiende Chuma, Anderson Ekale Emase, Stephen Kodonyo, Peter Mburu and Daniel Shimbi) field teams, and Andrew and Zoe Nightingale. Thanks to Aurélien Mounier for correcting the French abstract. We also thank the three anonymous reviewers for their suggestions and comments on the manuscript.

Funding

This study was funded by a European Research Council Advanced Award to MML (In-Africa Project, ERC 295907) and carried out with the permission of the National Council for Science and Technology, Republic of Kenya, No. NCST/5/002/R/419, and from the National Commission for Science, Technology, and Innovation, Kenya, No. NACOSTI/P/15/2669/4758.

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This article is a product of the ongoing research by the In-Africa Project, directed by MML. Survey and excavations were conducted by AW, JMMF, PG, RAF, and MML (2013); AW, JMMF, and PG (2014); and AVB, GN, PG, AW, RAF, and MML (2016). AVB and AW compiled the historical data on the site; PG compiled and collected the geological data. AVB produced Figs. 1, 5, and 6; GN drew Figs. 3 and 4; and Figs. 2 and 6 were made by AVB and PG. The paper was written by AVB, with contributions by MML, PG, AW, GN, JMMF, and RAF.

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Correspondence to Ann Van Baelen.

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Archaeological time period: Middle Stone Age (MSA), Later Stone Age (LSA), Pastoral Neolithic

Country and region discussed: Central Rift, Kenya, East Africa

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Van Baelen, A., Wilshaw, A., Griffith, P. et al. Prospect Farm and the Middle and Later Stone Age Occupation of Mt. Eburru (Central Rift, Kenya) in an East African Context. Afr Archaeol Rev 36, 397–417 (2019). https://doi.org/10.1007/s10437-019-09342-0

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