"The stone monument at this location is one of Nebraska's original bench marks.
Surveyors use bench marks to determine elevations. This one was placed by the U.S. Coast & Geodetic Survey in 1902. It was part of a larger project in which a sea-level based elevation was carried by surveyors from coast to coast. This established the state's first precise levels.
Today this marker, designated "H 4," is approximately 3,786 feet above mean sea level."