See Wiki http://en.wikipedia.org/wiki/Ravana_Falls
The falls have been named after the legendary hindu character Ravana, which is connected to the famous Indian epic, the Ramayana. According to legend, it is said that Ravana (who was the king of Sri Lanka at the time) had kidnapped princess Sita, and had hidden her in the caves behind this waterfall, now simply known as the Ravana Ella Cave. At the time, the cave was surrounded with thick forests in the midst of wilderness. It is also believed that Rama’s queen bathed in a pool that accumulated the water falling from this waterfall.