With an average elevation in excess of 4000 m asl, the Tibetan Plateau is one of the Earth's most prominent topographic features. The plateau plays an important role in the global climate system by acting as a heat source during the summer and a heat sink during the winter. There also exists evidence that its influence extends into the upper-troposphere and lower-stratosphere through the existence of a region of low total column ozone over the plateau. We report on observations of ozone concentration from the Bhutanese Himalaya that support the hypothesis that a Taylor Cap exists over the plateau. We argue that the presence of this cap results in the formation of a halo of ozone-rich air in the upper-troposphere around the perimeter of Tibet. The Himalaya are within this halo and the higher peaks may be exposed to ozone concentrations similar to those found in industrialized cities.