This is my favorite spot to take a break and check out the
beautiful surroundings. The cache should be easy enough to find. My
coordinates were bouncing around both days that I checked them, so
I took a lot of readings and averaged them out. Stay on the
asphalt, don't go climbing any fences or stairs, and you'll find
it. (Note: Google Map for this location is misleading, although the
satellite view is more helpful.)
The easiest (and safest) northbound access is via exit 460,
rather than stopping on the Interstate. The exit comes up sooner
than you think! At the stop sign, continue straight to find the
cache.
If southbound, take exit 460, keep to the right, turn right to
go over the bridge, then turn left and you're there. It is legal to
backtrack to the bridge again to get back on southbound I-25.
UPDATE on State Status
I had said, "Trust your GPS!" but I should also have said, "Do
plenty of research!" This cache is indeed just inside Colorado.
While the State Constitutions of both
Colorado and
New Mexico declare the 37th Parallel North to be the state
boundary, that boundary was surveyed by different people at
different times, and none of them entirely accurately.
At one point, there was a suit by New Mexico against Colorado to
declare the more northern line the correct boundary, but the
Supreme Court
decided in 1925 that the more southern, "Darling Line",
"...must be now taken as the established boundary between the two
States."
So there you have it. I was right - the cache is south of what
we now recognize as the 37th Parallel, declared to be the state
boundary. I was also wrong - the place on the ground surveyed then
as the 37th Parallel, but now recognized by our GPS receivers to be
not quite the 37th Parallel, is the legally accepted border between
the two States.
Thank you to those who pointed out the error of my ways, and
I've learned a big lesson! I'm updating this cache page to note
that it's in Colorado, not New Mexico.