You can see this bison tube from the ground. The trick is getting to it. Unless you can jump twelve feet high, you will need some help. Perhaps you can come scout it out then decide what you wanna do. Just pass it by, put it on your "ignore" list, or maybe, just maybe you will go home and get the proper equipment and come back. Or maybe you are one of those well prepared cachers that already has the ways and means.
It is in a tree. Pretty high up, but not at the top of the tree. I would not recommend climbing to the cache, unless you weigh five pounds. Or are a cat.
I know I don't have to tell you this, but you MUST sign the log to count it as a find. I will check it. I drive down this highway on a regular basis. None of this "I saw it but I couldn't sign the log" found logs. Write a note if thats the case. I am actually interested if you did see it.
Good luck. Have fun, but more important: be careful!