I gave it another try with the setting from here: http://www.tarotforum.net/showthread.php?t=31471
As soon as I opened the door from Malkuth to the universe I was in a jungle. Everything was green and the smell of moss penetrated the air. I went in a few steps. A black cat with a very wide face appeared. I tested her with the letter taw. She did not retreat, so I asked her what I could learn from her. I followed her into a long straight dark cave with a light at the other end. It was more like a tunnel than a cave. I could not see the cat it was so dark. In the middle of the tunnel there was a crystal door which I could not open. The cat opened it for me and the tunnel continued. On the right there were some blue sparks like electricity coming out of the wall.
As I reached the other end of the tunnel the black cat was gone. The jungle continued.
My concentration slowly faded, so I went back through the two parts of the tunnel, back to the temple of Malkuth and then down to earth and in my body.
Weird experience and I do not quite know what to make of it.