Periyar wildlife sanctuary is South India’s most popular wildlife sanctuary and it’s highest peak reaches 6,624 ft high. Periyar is near Thekkady and covers an area of 357 sq miles. The topography consists of steep and rolling hills which are thickly wooded. The sanctuary surrounds the man-made Periyar Lake, created by the British in 1895. It is the major watershed of two important rivers of Kerala, the Periyar and the Pamba.