No door, no palace was to be seen.

A white figure gleamed past me, wringing her hands, and crying, "Ah! you should have sung to me; you should have sung to me!" and disappeared behind one of the stones.

I followed.

A cold gust of wind met me from behind the stone; and when I looked, I saw nothing but a great hole in the earth, into which I could find no way of entering.

Had she fallen in?
I could not tell.