Cave: a swelling and piling up of darkness that leads to the energy of openness; in the earth it allows for a space of air (but little or no light); in the sky, it builds towering clouds, and defines a space of shadow beneath them. What light they both have is of the mind (in one case, an eye opening; in the other, lightning.)
A sacred Sylix site. Reasonably. It’s not often one gets to enter this power, or even shelter within it. The clouds, for instance, pass on, as things do in open air and light.