Olakaruvi or Ullakarvi is a waterfall on the Western Ghats hills around 25 km from Nagercoil, Kanyakumari District, Tamil Nadu state.. According to the old legends Olakaruvi Falls has the rejuvenating power. Olakaruvi waterfalls, requires an hour's trek by foot from the base of the hill. However, it is better to go in a group, as it is a forested area.There are two falls - the lower falls, which is a good picnic spot, and the higher falls, which is further uphill. The water is basically spring water, coming in as a stream up from the hills nearby.