27:57

Closer still, until there is no clear boundary between the sky and mountains, or the mountains and sand. At a certain distance, here, every grain of sand becomes a mountain and gains its own sky... your focus snaps in again, and you can SEE THIS! But your fall continues, towards the new ground, at the base of the new mountain... then the sand on the shore of this mountain which was once a grain of sand reveals that it also has innumerable particles, each of which is a mountain with its own sky, and so it goes until the spring winds down.