This spot is a perfect little place that me, Tuco and Angel Eyes have visited in the past and will likely come to visit again soon (to collect the hidden loot!). While here, I pondered the location and reckoned that it was similar to a bunch of other spots around this wide, wide world.
The following locations all have a few things in common with this cache location. See if you can figure this thing out! But don't take the gold. Tuco wouldn't take too kindly to that!
S 32 36.102, E 121 04.561
N 50 16.962, W 84 55.715
N 49 58.065, W 110 29.461
N 50 38.190, W 103 45.312
N 63 15.945, W 96 39.879
See, in this world, there are two kinds of people, my friend. Those with loaded guns and those that dig.
You dig...
You can validate your puzzle solution with certitude.