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Have made contact with DMA library to gain an altitude for you of the area.
The area around Satipo ranges 11,000 to 13,000.
If the individuales are traveling via car or truck they will pass thru areas
near to 18,000 ft. Will get back with an elev. as soon as I'm called.
The DMA library at Hydro/Topo. cntr. can be reached on 301 227-2109 for
future inquiries.
John Shanton, USGS-Reston-ESIC