The posted coordinates will bring you to a signboard with information regarding Sorensen Prairie. In order to find this cache you will need to project a waypoint from the signboard: "A" feet at "B" degrees true.
Distance: "A"
Estimate the distance from the signboard to the center of the observation platform and let this distance be "A"
Bearing: "B"
On the signboard you will find a sign thanking Paul sorenson.
The sign reads in part: "Thank you Paul sorensen for "_____ _____ _____" ....."
Count the individual letters in each of the three words and let this be XYZ (X = letters in word one, etc...)
XYZ minus 734 = "B"