Sapthagiri

 The seven peaks are called 

1. Vrushabhadri – Hill named after an Asura Vrushabha who penanced on Lord Srinivasa
2. Anjanadri – Hill of Lord Hanuman. it is said Hanuman's mother Anjanadevi did penance (tappassu) for 12 years.
3. Neeladri – Hill of Neela Devi – It is believed that hair offered by the devotees is accepted by Neela Devi. It is because of boon granted by Lord Venkateswara to Neela Devi.
4. Garudadri or Garudachalam – Hill of Garuda, the vahana of Lord Vishnu
5. Seshadri or Seshachalam – Hill of Sesha, the dasa of Lord Vishnu
6. Naraynadri– Hill of Narada Muni
7. Venkatadri – Hill of Lord Venkateswara

The seven hills, also called Saptagiri, represent the Saptarishi (seven sages).