For its Greco-Roman spa qualities: "they founded a thermal station on the site in the late 2nd century" (AB ev), and Romans from 129 B.C.

"Channelling much of the east-west exchange along the Silk Roads over the whole period from the 2nd century BCE to the 16th century CE" (brief description state party)

"Having witnessed significant stages in the development of human civilization on the Eurasian continent over a period of eighteen centuries between the 2nd century BC and 16th century AD," etc (nom file)

The third phase, which represents the great majority of the geoglyphs, is the Nazca phase proper (200 BC-AD 500). (AB ev)

For Early Roman city: founded as a Roman colony in 181 BC, and connected to the road network

from around the 2nd century BCE to the 3rd century CE (AB ev)