The posted coordinates are for the dedication sign shown. It is in Lancaster County Central Park and is shown on the official map as an arrowhead. There is parking nearby that works for sign and final. Do not park on the road.
Read the sign at the posted coordinates to learn that Indian remains were discovered in this area in the year xxAx. Use A in the latitude for the final of N 40 01.0A1
Read the sign at site to learn that at least "number" bodies were discovered. "Number" is spelled out. Represent it as two digits as BC and use those for the longitude of the final of W 076 17.C26 (note which digit you need)
Take care with children and traffic as you approach final.
The final has been moved about 40 feet west; puzzle changed slightly to match. July 2021, final moved to other side of trail because host was chopped down. Puzzle changed again slightly.
At the final, you are looking for a black bison tube attached to a stick nestled in a slender cavity in a tree trunk. Please re-hide so that it is not obvious to muggles. There's a spoiler picture on one of the owner maintenance logs.