Several years ago during a photographic trip, my group had been traveling up a trail for almost three hours, and I began to have a funny feeling that we were going in the wrong direction. I asked the guide about it, and he assured me that everything was fine. Not wanting to be presumptuous, I kept walking. After a few minutes, I noticed that my sense of uneasiness persisted; in fact, it was growing stronger. I pulled out my compass and looked at the map. Sure enough, we were headed away from our intended destination.
It took us close to an hour and a half to return to where we had taken the incorrect turn off the trail. Sadly, this meant that by the time we got to the site, our window for taking photographs was cut short.