Different sources were used for the validation of the results. Two studies are applicable as reference from the published literature. Eight main terraces and several beaches were found and mapped up to an elevation of 1,115 m a.s.l. within the vicinity of the road leading from Makuyuni in SE direction by Keller et al. [17]. Four different lake levels were identified in the field but not mapped by Somi [19].
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As further reference for this study, 25 paleo-shorelines and the occurrence of stromatolites (14) east of Lake Manyara were mapped with GPS points in the field during surveys in 2012 and 2013 (Figure 4).