 Originally measured as 14 @,@ <unk> feet ( 4 @,@ <unk> m ) in height , Mount <unk> 's elevation was later adjusted to 14 @,@ 440 feet ( 4 @,@ 400 m ) following a re @-@ evaluation of mapped elevations , which sparked protests . The actual change was made in 1988 as a result of the North American <unk> <unk> of 1988 ; it seems the original measurement resulted from the Sea Level <unk> of 1929 . A matter of some contention arose after the Great Depression over the heights of <unk> and its neighbor , Mount Massive , which differ in elevation by only 12 feet ( 3 @.@ 7 m ) . This led to an ongoing dispute that came to a head with the Mount Massive supporters building large piles of stones on the summit to boost its height , only to have the Mount <unk> proponents <unk> them . The effort was ultimately unsuccessful and Mount <unk> has remained the highest peak in Colorado . The first <unk> ascent of <unk> occurred in 1949 , when a Jeep was driven to the summit , apparently to judge suitability for skiing development . 
