The vast expanse of area on the Tirumala hills is covered with lush green forests. The hills are in fact part of Sri Venkateswara National Park. Wild animals are said to roam freely in several parts. The area is also said to be rich in medicinal plants and herbs. The hill range is also dotted with several waterfalls including Jabali Theertham, Rama Theertam, Sesha Theertham, Bala Theertham, Papavinasam and Akash Ganga.
In recent years, large scale developmental activities in the region have caused denudation of the forests and the soil, leading to extinction of indigenous flora and fauna. The wildlife has also been severely affected by light and noise from the vehicles.