History repeats itself: Mile high mark at the Colorado State Capitol to move for a fourth time

The mile-high marker at the Colorado State Capitol is moving for a fourth time due to improved GPS technology enabling more precise elevation measurements. NOAA's National Geodetic Survey, led by physicist Derek van Westrum, conducted research over 15 years to resurvey the 5,280-foot benchmark. Visitors and tour guides at the Capitol have historically engaged with the iconic marker, which remains a popular landmark despite its relocations.