O' Valley or Ouchterlony Valley is a Town Panchayat in the Gudalur Taluk of The Nilgiris district in the Indian state of Tamil Nadu. The name is a contraction of an older name after a James Ouchterlony, who established coffee plantations in the area. This panchayat area is located between Mudumalai National Park and New Amarambalam Reserved Forest a…O' Valley or Ouchterlony Valley is a Town Panchayat in the Gudalur Taluk of The Nilgiris district in the Indian state of Tamil Nadu. The name is a contraction of an older name after a James Ouchterlony, who established coffee plantations in the area. This panchayat area is located between Mudumalai National Park and New Amarambalam Reserved Forest and has several valleys, streams and water falls.