Not all worlds are spherical! Only those with sufficient mass to generate a gravity field strong enough to ensure every electron of matter is drawn tightly towards the centre.
In this work there are dimensions within dimensions. For example look at the arch in the bottom left and you will see a mountain scape with a star field that is inside the rocks not outside, suggesting you can walk through the arch into another universe. There are three others like this in the bottom right and the large mountain in the middle left could contain one as well. In fact there are others to find as well!
This is my first drawing done on Canson Bristol Board and although less forgiving than Arches watercolour paper forces the artist to draw tighter lines. I hope the difference shows.