Isaiah 2:15

against every high tower,
against every fortified wall,

The high-walled fortress will be brought down,
thrown to the ground, to the dust.

Treasury of Scripture Knowledge

And upon every high tower, and upon every fenced wall,

I will lay waste mountains and hills
and dry up all their vegetation.
I will turn rivers into islands
and dry up marshes.

A mongrel people will live in Ashdod,
and I will destroy the pride of the Philistines.

Every island fled, and the mountains disappeared.