This is a bonus caches for the Waukesha Spring Remnant Lab cache
The cache is not at the posted coordinates.
You must find one Waukesha Spring Remnant lab to obtain coordinates to this cache.
The Adventure Lab can be found by downloading the mobile app from Groundspeak. After you have found the right Springs location, you will be shown the coordinates for this bonus cache.
The hyperlink to the Waukesha Spring Remnant is here: Waukesha Springs Remnants