geomancy

/ˈdʒiːoʊˌmænsi/
noun
  1. A method of divination that interprets markings on the ground or patterns formed by tossed soil, stones, or sand.
    • She learned geomancy from her grandmother, who could read the land's energy.
    • The book explains how geomancy uses random dots and lines to make predictions.
    • Geomancy was once used in many cultures to answer important questions.