The Kurinji Flower is in full bloom around December once in 12 years, and it bathes the valley in a beautiful sea of blue. Its because of this the hills are known as Nilgiris (''Nil'' means Blue and ''Giri'' means Hill). It was last in full bloom in 2006; its next bloom is expected in 2018. Kodaikanal is also sometimes referred to as "Princess of Hill stations." Kodaikanal off course is situated in the Palni Hills. http://wikitravel.org/en/Kodaikanal