  We discuss a possible test of neutrino oscillation hypothesis by proposing
the combined analysis of high energy atmospheric neutrino induced muon events
that have been detected around horizontal direction in the Kolar Gold Field
(KGF) underground site and below the horizontal direction by many large
detectors such as Super-Kamiokande and MACRO. Up/down asymmetry obtained using
contained events recorded by detectors at Kamioka site probes low energy region
of atmospheric neutrino whereas, the suggested method probes high energy
neutrinos. It mainly depends on the observations and it is free of
uncertainties in neutrino flux, interaction cross section etc. In this paper we
demonstrate that the method is sensitive to a region of oscillation parameter
space that explains all the features of atmospheric neutrino data in the
Super-Kamiokande detector; the limiting factor being the statistical strength
of the KGF observations. This method provides the only way to study the up/down
asymmetry beyond Multi-GeV region which is yet to be measured experimentally.
