What could there be about it to stamp that dread upon Ruth's face?
I leaped the crevice; Dick joined me.

Now I could see that the ring was not continuous.

Its broken circle was made of sharply edged cubes about an inch in height, separated from each other with mathematical exactness by another inch of space.

I counted them--there were nineteen.
Almost touching them with their bases were an equal number of pyramids, of tetrahedrons, as sharply angled and of similar length.

They lay on their sides with tips pointing starlike to six spheres clustered like a conventionalized five petaled primrose in the exact center.