The smoke rose as if from a hidden fire.

The mist thickened and puffed as though fed by some hidden fire.

Yet he also gives the idea of hidden fires.

It remains only to uncover the hidden fire in you.

For the first time Loyse flashed her hidden fire.

The mountains clench their great hands full of hidden fire.

A beautiful doll carved from ice, with hidden fires.

A great emerald, cool and green and full of hidden fire.

I really felt there was a hidden fire deep inside him.

The hunter wouldn't have risked giving away his location by even a hidden fire.