A team of professional and amateur archaeologists has been digging for prehistoric, Roman, medieval, and Georgian remains.
The dig at Cothelstone Farm in the Quantocks is funded by the National Lottery Heritage Fund and gives volunteers the opportunity to learn how to excavate a site.
The site was significant to people during the Bronze Age right up until medieval times, archaeologists said.
Dan Broadbent, historic heritage officer for the Quantock Landscape Partnership Scheme, said: "What makes it so special is the idea that you have a single place looking out at this fantastic view which was clearly important for people in the past over a long period."
The scheme, alongside charity DigVentures, organised the dig after seeing aerial images of the site which showed "potential features".
...
"As the story has evolved, we discovered that the ring ditch was probably visible into medieval times, the Romans would have seen it, the Anglo-Saxons would have seen it, so being able to tell that story has been very cool."
The ring ditch was likely a ceremonial site during the Bronze Age.