Yes, I know what you mean by a void. I have experienced it quite often. Once after I fell asleep I felt like I was falling down, separating from my body. The darkness was all around me and all I could feel was a sound in my ears, as if the air was flowing past me as I was falling. At that point if you set your mind to a particular dream environment or scene, it will appear in front of you. So voids can be very usefull - if you know how to use them .

ALES