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of communal structures, such as the famous Tower of Jericho. PPNA settlements are characterized by round, semi-subterranean houses with stone foundations and terrazzo-floors. The upper walls were constructed of unbaked clay mudbricks with plano-convex cross-sections. The hearths were small and covered with cobbles. Heated rocks were used in cooking, which led to an accumulation of fire-cracked rock in the

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