One, two, three, four—to twenty-five. A third time Jean raised his arm, and a third time the gleam of flame mounted and was blotted out.
Then from the valley—from the further side of the Vézère—a flash.
One, two, three, four—to twenty-five.
A second flare.
One, two, three, four—to twenty-five.
A third gleam.
"My father is ready," whispered Jean. "Now we must find the exact spot."
It is one thing to know where is a cave or, indeed, any object marking the face of a cliff when seen from below and quite another to discover that same cave, to find out when and where you are immediately above it as you walk on the summit of the precipice. Every feature that marks a site as seen from below fails when you stand above.
If this be the case in broad daylight what must it be by night?