What lurks beneath

I had that dream again- I was somewhere in south America, I was wading along a rivers edge, I remember distinctly the green grasses, the white sand, dull gray rocks, the gurgling flow of the water...There is danger here, but why am I alone, and what am I doing? I'm not lost, I'm looking for something, but this is insane, there isn't another soul around for dozens of miles. I'm dimly aware of how precarious my situation is, just move one foot in front of the other, keep going, there, you can do it...watch out, the thing you seek is near...When I woke up, I swore it was a real experience, that it must have happened in the past, it took a half hour to disabuse me of this idea.