Ah! I was in doubt at first, but I know it now! It is the sound made by a great saw as it eats into the wood." "A saw mill, Tayoga!" "Yes, Dagaeoga, that is what it is, and now mind will tell us why it is here.

The logs that the axes cut down are sawed in the mill.

The saw would not be needed if the logs were to be used for building a fort.

The ax would do it all.

The logs are being turned into planks and boards." "Which shows that they're being used for some purpose requiring much finer finish than the mere building of a fort." "Now the mind of Dagaeoga is working well.