As soon as he had received this answer, King Archidamus proceeded first to make a solemn appeal to the gods and heroes of the country in words following: "Ye gods and heroes of the Plataean territory, be my witnesses that not as aggressors originally, nor until these had first departed from the common oath, did we invade this land, in which our fathers offered you their prayers before defeating the Medes, and which you made auspicious to the Hellenic arms; nor shall we be aggressors in the measures to which we may now resort, since we have made many fair proposals but have not been successful.

Graciously accord that those who were the first to offend may be punished for it, and that vengeance may be attained by those who would righteously inflict it." After this appeal to the gods Archidamus put his army in motion.

First he enclosed the town with a palisade formed of the fruit-trees which they cut down, to prevent further egress from Plataea; next they threw up a mound against the city, hoping that the largeness of the force employed would ensure the speedy reduction of the place.

They accordingly cut down timber from Cithaeron, and built it up on either side, laying it like lattice-work to serve as a wall to keep the mound from spreading abroad, and carried to it wood and stones and earth and whatever other material might help to complete it.

They continued to work at the mound for seventy days and nights without intermission, being divided into relief parties to allow of some being employed in carrying while others took sleep and refreshment; the Lacedaemonian officer attached to each contingent keeping the men to the work.