The Kriemhildenstuhl is an old Roman quarry, which was worked by the 22nd Legion of the Roman Army, who were stationed in Mogontiacum (Mainz) around 200 AD. Immediately above the quarry is the Heidenmauer, a 26 hectare fortified Celtic settlement from the late Hallstatt era. The Brunhildisstuhl a little below the Kriemhildenstuhl was probably another a Roman quarry. Other old Roman quarries in the vicinity are found in the Kallstadter Tälchen valley and on the Weilerskopf.
In the Middle Ages the quarry was erroneously linked to the Burgundians. As a result of excavations in the second half of the 20th century, new information surfaced about the technology and worker organisation of the Romans and brought new inscriptions to light. Because the lower levels of the quarry filled up with waste material during the quarrying operations, the traces of Roman tools and inscriptions and drawings here were very well preserved. There are drawings of horses, which may be the symbol of the unit working here, as well as drawings of men, phalli and vulvas. Whether the sexual symbols were aspects of a pagan cult or more like present-day toilet graffiti is difficult to determine.The wheel symbols and swastikas could be religious symbols or just workers' marks.
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.