Ruff-Ruff Park #2 Traditional Cache

#2 of the park  - A little while ago they knocked down some old apartments and we all wondered what would happen to this open field.  Well, the city of Pasadena just opened this new dog park with a some very short walking trails.  It's tiny but still a cool new park. My son has been asking to place some of his caches he received for Christmas for some time so when he saw the park had opened he immediately knew we needed to bring people to it.  

You're looking for a bison tube.  We only used our geocaching app for the coordinates so they may be off a little...or a lot.  If the coordinates are off then check the hint, it's a super spoiler.  Also, we weren't convinced of the security of how it was left so if you can find a better place to put it just put that info in the details.