I don't have a picture, but I once went with friends on a hiking trip up some mountains in North Wales. We stayed in a Youth Hostel and set off up a path behind it, heading for a mountain called Moel Siabod.
Eventually we found ourselves in the most stunning forest I've ever seen in my life. It was literally like a fairy forest straight out of a fantasy film or fairytale book. Huge, gnarled trees, lush green moss carpeting all the rocks and the forest floor and a little babbling brook running through it.
It was as if we'd been transported to a magical, mystical place that shouldn't exist, and we were the only ones there. I'll never forget it.