One can have a close view of chain of natural grassland and shola forest while trekking.
The wet climate and the tremendous water retentive capacity of the shoal grasslands and forests has led to the formation of thousands of perennial streams in the region converging to form major rivers of the region - Tunga, and Nethravathi at Gangamoola which is situated in Gangadikallu
Gangadikallu is the birthplace of the River Tunga, the lifeline of the Malnad and coastal regions. From its origin, the Tunga river flows in a north-easterly direction passing the towns of Sringeri, Thirthahalli and Shimoga. After covering a total distance of 147 kms, it joins the Bhadra at Koodli near Shimoga and forms the Tungabhadra river.