I dreamt that me and half a dozen other people existed in this constantly fluid space dimension where solids were transitory and at any moment you might be able to pass through objects. The whole dimension was moving and constantly evolving into different shapes and planes. There were phases where everything became completely opaque, and others were infinite plains dissected the space along with shapes that were like liquids in geometric forms. Some shapes became realms where only certain beings could exist, but not move between. We were all swimming around weightless and for some reason we were the only creatures that could move between it all. We were ourselves, human, but other creatures were spherical or simply points of light. All this took place inside a mountain, in an infinite void with apartment windows looking out to blue skies.