This cache is not at the posted coordinates; you must solve the puzzle below to find out where it is.
This is just a quick puzzle that I would have put inside the park if they allowed physical caches. All answers can easily be found online.
The Puzzle
Final Coordinates: N 44° 48.ABC W 111° 05.DEF
A = The second digit of the width of Yellowstone's widest point in miles
B = The number of park entrances
C = The second digit of Yellowstone's size in acres
D = The sum of the digits in the coldest recorded temperature within the park in °C
E = The third digit in the year John Colter first visited what became Yellowstone
F = The day in March 1872 when the park was officially established.
The Cache
Cache is a magnetic key holder, and there is pullout parking right next to it. This cache is available in winter if there is less than a 3 feet of snow.
Congrats to nrstevens7 for being the FTF!