THE THIRD WATERFALL The others followed Rod's arm.

Behind him he heard the gentle click of Wabigoon's revolver and the sharp, vicious snap of the safety on Mukoki's rifle.
From beyond the driftwood there was rising a thin spiral of smoke! "Whoever they are, they have certainly seen or heard us!" said Wabi, after they had stood in silence for a full minute.
"Unless they are gone from camp," replied Rod in a whisper.
"Keep eyes open!" warned Mukoki as they advanced cautiously in the direction of the smoke.

"No can tell what, I guess so!" He was first to mount the driftwood, and then he gave vent to a huge grunt.

The smoke was rising from beside a charred log which was heaped half-way up its side with ashes and earth.

In a flash the meaning of the ash and dirt dawned on Rod and his companions.