This year, I read all four books of the 2001, A Space Odyssey series, and this area reminds me of the movie.
You may remember the black monolith from the movie, but over the novels there were a handful of different monoliths. Tycho Magnetic Anomaly-0 (TMA-0) was the prehistoric monolith. There was another similarly-sized version (TMA-1) that was located in a crater on the moon.
TMA-2 was another monlith that orbited a Saturn moon (Jupiter in the movie). This was also referred to Big Brother due its much larger size.
So as you are here looking for a cache on a bridge version of TMA-1/2, do you see Big Brother watching your activities?
*** There is no parking anywhere near the GZ. Please head toward one of the parking areas. ***