This happened in the Tullichewan Castle Woods, Dumbartonshire, Scotland in 1998 when I was 13 years old. A friend and I were going to check on rabbit snares as I was into hunting at the time. We were taking a shortcut through the woods, which are a good bit away from any houses; the closest would be about a mile an a half. We would do this fairly often.
It was a warm July evening around 5 p.m. or 6 p.m. We were trekking and talking when I noticed ahead of us there was what looked like a big mound of dirt. I didn't think anything of it. I just thought a tree had fallen over and pulled its roots up.
As we were getting closer to this mound that was ahead of us, I kept looking at it now and again, and was starting to feel a bit on edge, as if we were being watched. I couldn't see anyone, so continued on.
When we were around 5O to 6O feet away from this mound, I looked at it again. This time I did not take my eyes off it. I couldn't believe what I was seeing! It was a big, dark, broad, hairy creature with white eyes -- and it was staring right at us! It was easily ten feet tall and was around six feet wide. I could see the hair on its head and in front of its eyes, blowing in the wind.
I felt like I was looking at it for ages. I pointed it out to my friend, who was slightly behind me. He looked at it for a second or two, turned white, looked at me, and bolted. I did the same.
We ran for a solid ten minutes at full speed until we were out of the woods and back around people near our homes. We compared what we had just seen. We both saw a big, hairy, man-shaped creature with white eyes. It never seemed to have a face other than the eyes, which were staring at us. We couldn't make out arms or legs either, but it could have been because it was so hairy. It was a kind of dirty black peat colour.
It scared me senseless. So much that I still have nightmares about it if I start thinking about it too much. It terrified me. I never believed in monsters until I saw it. We were laughed at when we told people about it, so we kept it to ourselves.
If I was to make a guess at what it was, I would say it was a demon. Definitely not a man or animal. An animal with white eyes would be blind and big animals usually get spotted a lot. Anyone who says monsters are not real may be correct in some cases, but not all -- or in this case. I say experience is believing. I now know for a fact there's the unexplainable.