An unusual fire, which burns up not only the roof and superstructure, but the foundations, leaving no bottom for hopes of being restored. See Deuteronomy 32:22.
Related Commentaries of Lamentations 4:11
Lamentations 4:11
11 The LORD hath accomplished his fury; he hath poured out his fierce anger, and hath kindled a fire in Zion, and it hath devoured the foundations thereof.