60 ' ' 50गोनोखोगिरिनि सिमां आरो नायबिजिरगिरिनि सोरगो हिसाबै बाखनायजानाय निजोम हायेना मान्नारकदनि प्राय 50 कि.मि साहा-सोनाबाव दं।
Silent Valley, eulogized as a scientist's dream and a researcher's paradise, is situated at about 50 km north-west of Mannarkkad.