The west arm of the Theatre shows to the left, and the foreground is occupied by the remains of the Thersilion or Town Hall. The river Helisson sparkles in the distance, which is closed by the mountains of Arcadia. Sunset.] (386 B.C.) Mantinea again incurred the hostility of Sparta and experienced its military skill. The river Ophis (so called from its circuitous windings farther north), which at that time ran through the city, was diverted from its course by the Spartan general Agesipolis, and so dammed up that its waters overflowed the brick-built walls, which soon gave way, compelling the inhabitants to surrender. The community was then dissolved into the five villages of which it had been composed, a high-handed act on the part of Sparta, which was characteristic of its policy when it thought its ascendency to be in danger. One of the first results of the great Theban victory achieved by Epaminondas at Leuctra (371 B.C.) was the reunion of the scattered population. But though the Mantineans were at first in sympathy with the policy of that great soldier and statesman in seeking to create an Arcadian federation for the defence of the country against Spartan aggression, the rise of a new capital at Megalopolis excited their jealousy, and it was partly owing to their defection that Epaminondas had to undertake his last campaign in the Peloponnesus. It was in a great battle fought in the immediate vicinity of Mantinea that he met his death. Never was there a more striking proof of the influence that may be exerted by a master-mind upon an army, than when Epaminondas was suddenly struck down while fighting with heroic energy at the head of his men. As soon as they knew that he had fallen, their victorious advance ceased, and the enemy were allowed to retire without suffering the usual penalties of defeat. He was carried out of the field with a lance sticking in his breast; and a rising-ground is still pointed out (Scopas) from which he is said to have watched the close of the battle. He named two men to succeed him in the command of the forces; but, on learning that they had both fallen, he advised that peace should be concluded with the enemy. Having ascertained that his shield was safe, he ordered the javelin to be extracted, and as the blood rushed out he breathed his last. He was buried on the spot, and a monument was erected over his grave, of which no trace has yet been found.