I was standing at an observation rail on a platform that was overhanging the canyon a bit. I was nervous, but OK with it, until...
A busload of Japanese tourists swarmed down onto the platform. They happened to be “comfortable” with jostling.
I got the heck out of there.
No disrespect intended but Japanese tourists are slightly crazy. I was in Yellow Stone one year and saw a Grizzly down off the road. I stopped with my friends and we were taking pictures of the bear. Japanese tourists came up behind us, stopped and got out, asking me what we were looking at, I told them a Grizzly, you could just make out his head and ears behind a log. They started down the hill toward the bear with me yelling at them to stay away from it. Fortunately for them the bear stood up and tossed the log it was hiding behind into the air and growled, 25 Japanese tourists set land world speed records getting back up the hill and into their cars!
Many Japanese tourists get hurt in Yellow Stone every year because they just don't get the concept of wild animals, IMO.
Good for you.