A hole in the ground. The hole is a consequence of two-thirds of a sixty-meter-diameter sphere being gauged out of the earth. The hole is thus a circle establishing a border between the two-thirds of the sphere interred in the ground, and the one-third, invisible, in the air. While the top third of the sphere is thus absent, the bottom two-thirds is composed of six million small hexagonal mirrors lining its walls. An eternal flame is lit at the bottom/center of the sphere, which reflects off the mirrors, thus producing a visible glow that emanates into the sky in the dark.
The hole is surrounded by barbed wire arranged in a circle, the diameter, again, being 60 meters. The land between the barbed wire and the hole is left unattended, for weeds to grow, and for strewn trash—either blown in by the elements or thrown in by vandals—to accumulate. Trash will remain in-situ, except that once a year, on Yom HaShoah, the site will be cleaned by sweeping the trash into the hole, where it will be burned.