These are the words from the plaque at the bottom of the hill:
POINT OF BEGINNING OF THE PUBLIC LAND SURVEYS OF THE SIXTH
PRINCIPAL MERIDAN
The Kansas-Nebraska Act of May 30, 1854 created the territories
of Nebraska and Kansas, which had to be surveyed before settlement
could proceed. In November l854 Captain Thomas J. Lee of the U S
Army Topographic Engineers determined the Fortieth Degree of North
Latitude along the Missouri River. On May 8, 1855, the cast iron
monument on the bluff above was erected by Charles A. Manners to
mark the beginning of the base line (Fortieth Parallel) forming the
Nebraska-Kansas boundary.
In 1855-56 Manners surveyed westward from the cast iron monument
along the baseline 108 miles to establish the Initial Point of the
Sixth Principal Meridian. The Initial Point controls the system of
sections, township, and ranges of the public land surveys in
Nebraska, Kansas, and parts of Colorado, Wyoming and South
Dakota.
The original surveys of Nebraska were completed in l883. All
land transactions (patents, deed, and easements) within Nebraska
are filed with the register of deeds of each county and reference
the corners set during these surveys.
The password to claim this find is the letters inscribed in the
concrete at the bottom of the monument on the Nebraska side.
Please send an e-mail with the password to me through the link in
my profile.