Adi Sesha’s “sacred spine” is traditionally mapped onto three South Indian temples—Tirupati (Tirumala), Ahobilam, and Srisailam—creating a coherent triangle of sacred geography across the Seshachalam and Nallamala ranges. This long-form exploration combines Puranic sources, architectural history, ecology, and lived pilgrimage to explain how terrain, theology, and ritual interlock. Readers discover how Tirumala’s seven hills evoke…