There is nothing hidden at the posted coordinates, and the cache is not accessible from Route 13. You must solve the puzzle below to obtain the actual cache coordinates.
You will be seeking a bison tube. Please use appropriate stealth when searching, and be sure the cache is concealed as well as (or better than) you found it.
It was almost exactly 10 years ago that teamajk started caching, and this occasion, like all such anniversaries, has led "J" to look back over the years, reminisce about fun times and good friends, and wonder at the swift passage of time. This cache is the eighth in what we hope will be an informal series of caches throughout the rest of 2020, with puzzles which may bring to mind some of our previous work while incorporating some new twists. Be sure to save the bonus information from the geochecker for the series finale.
2013 is memorable for the great fun we had solving and creating cipher puzzles based on the American Cryptogram Association's List of Cipher Types. Here's one for you with a little twist.
S37° 24.525' W002° 02.961'
N40° 59.582' W096° 53.761'
N46° 21.210' E042° 52.618'
N43° 54.588' W123° 31.110'
N44° 37.229' E129° 42.985'
S22° 11.780' E115° 12.579'
N16° 42.798' E096° 07.315'
N18° 29.087' E096° 26.955'
N64° 11.797' W099° 55.983'
25 15 74 23 65 26 67 37 24 12 28 41 16 52 86 24 82 35 43 66 11 56
45 35 34 65 64 28 34 21 72 33 75 45 22 66 35 15 61 28 27 12 36 23
43 72 55 34 15 75 25 15 56 52 81 47 88 55 52 31 26 87 52 34 65 53
67 27 58 52 56 41 78 47 33 81 47 88 48 52 54 88 84 52 58 66 83 33
34 52 38 15 64 72 27 51 43 42 88 45 33 34 52 46 66 81 26 14 32 72
71 52 66 51 56 47 51 52 28 77 76 77 22 27 58 18 83 42 44 82 33 81
47 66 51 35 54 88 16 35 58 72 32 22 47 38 41 43 72 52 35 34 67 77
88 26 84 66 77 21 33 34 27 14 12 84 86 52 77 28
You can validate your puzzle solution with certitude.
Many thanks to thanman2 for helpful feedback.