Mulfra Quoit is a Neolithic dolmen in the county of Cornwall in England. It stands on Mulfra Hill to the north of the hamlet of Mulfra.
Mulfra Quoit is similar to Chûn Quoit five kilometers away. The quoit has three 1.7m-high support stones, arranged in a U-shape 3.0m long and 1.7m wide, and open on one side. The capstone, which has slipped down, measures 3.2m by 3.0m, and is almost square; it has a weight of 5 tonnes. Since some of the stones that formed the chamber are missing, it is difficult to get an idea of its original form, but it is possible that four pillars supported the capstone slab as with Chûn Quoit. On the other hand, the capstone has a central bulge on its underside, which would give the stone a stable position on the existing three pillars. Mulfra Quoit was apparently covered by a mound, the remnants of which are still present.
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.