Elkab is an Upper Egyptian site on the east bank of the Nile at the mouth of the Wadi Hillal about 80 kilometres south of Luxor.
Elkab consists of prehistoric and ancient Egyptian settlements, rock-cut tombs of the early Eighteenth Dynasty (1550–1295 BC), remains of temples dating from the Early Dynastic period (3100–2686 BC) to the Ptolemaic Kingdom (332–30 BC), as well as part of the walls of a Coptic monastery.
References: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.