1 Kings 13:5

The altar also was rent
Split into two parts perhaps, and one fell one way, and the other another;

and the ashes poured out from the altar;
the ashes of the burnt offering, these were spilled on the ground; all which was done without any outward force, or any visible means thereof:

according to the sign which the man of God had given by the word of the
Lord;
by his direction and order.