Silent Valley, a picturesque estate, is located on the eastern end of the High Range and as the name suggests is cradled in a valley Surrounded by rocky hills. Moreover, the story down the generations explain its christening as "SILENT VALLEY" for the simple fact that it was enveloped by extreme quiet and calm, to the extent that no birds nestled in the surrounds.

Silent Valley is at a height of 5650 feet (1722 mts) but the highest tea field touches 6716 feet (2047 mts). The estate consists of 380.78 ha of tea and 293.76 ha of fuel area. The estate borders Arivikad on one side and Guderale and Devikulam Estates on the other. The estate originally consisted of 2 divisions, No. 1 and No. 2 Divisions. No. 3 Division was with Guderale estate and was amalgamated with Silent Valley when the erstwhile Nettiguddi Estate Was amalgamated with Guderale.

The rocky Surianalle range of hills are spotted with caves from time immemorial visible from the tea fields. Legend has it that they provided shelter to the Pandavas during their exile. In addition a Cross (18' high) has also been erected by the estate contractor among the aforementioned hills as a mark of good luck and point of worship by the Roman Catholics, beckoning the devouts to a pilgrimage on Good Friday.

Certain varieties of high altitude wild pepper have been noticed on this estate. The Research and Development Department has been propagating trials of these and results seem to be encouraging.

Tea in Silent Valley was first planted in 1910. Most of the tea is seedling variety except 31.51 ha of tea at present which is of clonal variety. Extension planting has also been carried out in a phased manner with biclonal seeds from Assam which will also improve the quality profile of the tea.

Since the estate is the lowest yielding in the South India Plantation Division, the Research & Development department carried out a Production Agronomy Trial commencing from the 1995 season to increase the yield of the estate. From season 1995-96 to season 1999-2000 a total of 322.68 ha of the estate was rejuvenation pruned consisting of 87% of the estate's mature tea area. This is possibly one of the largest exercises of rejuvenation pruning carried out over a period of 5 years. This will not only have a significant impact on the yield of the estate but also significantly improve the quality of tea produced. This pruning was followed by a massive inter-planting programme by which almost 14 lac plants were inter-planted during these 5 years. These infillings are expected to contribute to the yield of the estate from the 2nd pruning cycle. Mechanical shredding and burial of prunings in trenches were carried out in these fields to improve the soil status. During this period 143 ha in No. 2 and No. 3 divisions were brought under sprinkler irrigation using gravity sources. A further 53 ha of area has also been brought under sprinkler irrigation in No. 3 division.