Three : "Leave artifacts like broken pottery or inscribed bricks in place."

If we proceed along the way of metaphysics no human beings or objects will survive, leaving only artifacts.

I figure if I leave artifacts there, maybe somebody else will see them.

Some of Eternia's ancient civilizations possessed very advanced technology, and left many ruins and artifacts behind.

The owners must have left artifacts around.

It would mean that the Builders left all their records and artifacts for us, when we could get around to a technology that would understand them!

If one of their number had left artifacts behind, those items would be buried deep-and well-protected.

Yet some had gone into limbo leaving not only physical artifacts but spiritual ones as well.

They made tools of stone and flint but left few other artifacts behind.

Dance does not leave behind clearly identifiable physical artifacts such as stone tools, hunting implements or cave paintings.