History of the Peloponnesian War

After this appeal to the gods he began hostilities. In the first place the Lacedaemonians, using the trees which they had cut down, built a stockade round Plataea, that in future no one might leave the place; then they began raising a mound against the town, hoping that with so large an army at work this would be the speediest way of taking it.

So they cut timber on Cithaeron and built a structure alongside the mound on either side of it, laying the logs like lattice-work I to form a sort of wall, that the mound might not spread too much.