- Caption: Mt Logan. Mike Schmidt led an expedition that carried GPS equipement to the top in 1992 and accurately surveyed the summit. 1992 Height above Geoid = 5959 m or 19,550,5 feet. 2007 Laser Height above Geoid= 5966.1 m or 19,574 feet. Because both surveys used GPS, we can also compare HAE directly: 1992 HAE = 5977.05 m or 19609.7 feet. 2007 Laser HAE = 5983.99 m or 19,632.5 feet
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