2016 Tour de France was won by a rider.
The Slad is the name given to an Iron age defensive earth rampart in Hertfordshire , England .. Iron age. Iron age. rampart. defensive wall. Hertfordshire. Hertfordshire. England. England. It is thought to have formed part of a defensive fortification , joining up with the Devil 's Dyke and bordered on the north side by the River Lea to create a fortified enclosed settlement of approximately 35 hectares -LRB- 86 acres -RRB- .. River Lea. River Lea. It was constructed towards the end of the Iron Age , and probably in the early 1st century AD .. Iron Age. Iron Age. This , and other similar earthworks in the district , were built by the powerful Celtic tribe established in this area , the Catuvellauni , to define areas of land around their tribal centre at Verlamion -- the predecessor of the Roman city of Verulamium .. Catuvellauni. Catuvellauni. Verlamion. Verlamion. Verulamium. Verulamium. Unlike Devil 's Dyke , the Slad is located on private property , and is not accessible to the public .