The Dolmen of the Four Maols is a cist and National Monument located in County Mayo. It is located on Primrose Hill overlooking the River Moy, southwest of Ballina, outside the Road Safety Authority office.
This cist was erected c. 2000 BC. The massive capstone rests on three stones forming three sides of the square chamber. A fourth stone (probably the fourth side) lies nearby.
According to Irish legend, in the early 7th century Guaire Aidne mac Colmáin was King of Connacht. The rightful king, Cellach of Killala, had become a priest and later bishop of Kilmoremoy (Ballina). Four of Guaire Aidne's brothers murdered him; they are known as the four Maols from the Irish word maol, 'bald'. The four Maols were quartered at Ardnaree and then, supposedly, buried on Primrose Hill under the Dolmen of the Four Maols.
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The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.