This picture is based on a lucid dream/vision I had a number of years ago. Mainly the enterance under the tree and the blackbird. I got scared by what I saw when I reached the end of the tunnel, and I never was able to go into it again. I tried, but, though I could find the enterance, I could never make my self get close to it or enter it no matter how hard I tried. I got help on the tree from a photo referance I found in the newspaper one day and then (years later) saw in the movie 'Two Brothers'