The image inhabits what Alan Davie would call Jingling Space in that it is pulsing at the viewer. Thus the artist has created a sensation of continual movement within the picture space. There is also a 3-D effect created by the artist's careful use of light and shade and linework.
The forms within the drawing suggest many types of art, Mayan, Native American etc without actually settling on one style, except for the artist's own of course.
The picture also suggests the shamanic psychedelic vision. I don't know if this was the artist's intention but it certainly works for me!