In a cave, through a series of openings, beams of light fall inside. so that the darkness is punctuated with beams of light like so :
What is another name for this collection ?
Sample Sentence - Sunlight fell in beams through the holes, drilled into the sides of the cavern, at intervals so that it appeared to be a "??" collection of dark interspersed with beams of light.
Note: I have seen this question and while it talks about the name for the phenomenon, I'm talking about describing the effect.