signal fire
signal light

Someone needs to light a signal fire on the shore, to guide her where they're waiting.

He couldn't even light a signal fire to save a life.

Though she went to the watching place each evening, there were still no signal fires.

We'll find out tonight when we light our signal fire.

I think some- one will come if we light a signal fire.

Wasn't where the signal fire usually burns and it was new.

The wood will make a signal fire if someone comes soon.

They can't light a signal fire because the beast may see it.

Ahead of them on the following morning, he built a signal fire.

And each in turn was answered from the signal fire.