Early evidence of such practices appears as markings on bones and cave walls, which show that lunar cycles were being noted as early as 25, 000 years ago ; the first step towards recording the Moon ’ s influence upon tides and rivers, and towards organizing a communal calendar.

Early evidence of such practices appears as markings on bones and cave walls, which show that lunar cycles were being noted as early as 25, 000 years ago ; the first step towards recording the Moon ’ s influence upon tides and rivers, and towards organizing a communal calendar.

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