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The $PeV$ cosmogenic neutrino is still interesting argument. Since cosmogenicneutrinos interact weakly with matter, the detection of their direction willprecisely point out the source in the space. In this paper, we show the resultsof the simulation of tau lepton air showers induced by high energy neutrinosdetected by an array of stations designed to use the Earth Skimming methodimproved by the "mountain chain screen" strategy. Both track time stamp andposition information of the stations on the array are used to reconstruct theshower to estimate the direction and the number of events. The array studiedconsists of 640 stations ($40 \times 16$) spread over an area of $0.6\,km^2$starting from $1500\,m$ above the sea level (a.s.l.) on $30^{o}$ inclined planeof the mountain. When we extrapolate to 3 years and 10 $km^2$ we estimate 13tau lepton events in energy interval of 10 PeV to 1000 PeV detected using thepresent upper limits of tau neutrino flux.

Study of a large array to detect ultra high energy tau-neutrino