This was one of the main entrance gates into the ancient city and hill fort, with high stone walls and a deep ditch. The gate was excavated in 1868 by Bulliot and again in 1984 and 1996. The gate is an amazing 19 meters (60 feet) wide. There were three different periods of construction, and the gate is now reconstructed to show its design as of the 1st century B.C. using the original murus gallicus, or Gallic wall construction as described by Julius Caesar. This technique mixed thick stones with wooden timbers laid through the wall. Caesar said that these walls could neither be burned nor rammed.