The iridescent bodies of the dancers on the glass floors at each of the levels below him blocked much of his immediate view, so he released his astral form. Dropping quickly down all the levels, he came to where he could contemplate his destination. He saw the cool green power of the mystical shield-wall enclosing it, but no sign of the person he was supposed to meet. The shield prevented him from knowing whether she was already within its protection. The only way to penetrate its mystery was to walk through, physically, unhindered. The shield was nearly impenetrable to the pure astral body, but to break through it was something neither he, nor most other humans, could do unassisted.