Little was known of the Blackstone Rings. That they were vastly ancient and manifested portals to other places was known. Where those portals connected to was unknown.
Explorer VII, transited the Kiev Ring, into unknown space. Two days of mapping and he returned to the ring to wait for a known portal home.
He whooped when sensors identified the Space Needle near the Seattle Ring. He lined up his approach carefully. Waves of nausea and horripilation washed over him as transit began.
He never had a chance to react as the Ring cycled mid-transit, slicing Explorer VII neatly in two.
This story was written for the Science Fiction Fantasy Saturday Snippet Blogsite.