The exoteric meaning is that it shows a figure descending from the heavens (by his own will), represented by the zodiac. The legend is that Prometheus was tied to a mountain as punishment and had his liver pecked out daily by birds. But here Prometheus is freed. Some myths about Hercules had him doing so.
The esoteric meaning may be that this is a being falling from the sky bearing fire or light (lux). Not so much bringing down fire voluntarily but being forced out of heaven. Yes, you could read that as the world mountain/axis mundi. I hadn't thought of that way before – good catch.
This public artwork is an excellent example of something with an apparent outer and inner meaning. It is a Rockefeller commissioned work and their involvement with globalism is famous.