The Battle of Hastings was fought on 14 October 1066 between the Norman-French army of William, the Duke of Normandy, and an English army under the Anglo-Saxon King Harold Godwinson, beginning the Norman conquest of England.

Senlac Hill (also known as Senlac Ridge), was the ridge on which Harold Godwinson (King Harold II) deployed his army for the famous battle. The high ground that the hill offered gave the English a great advantage over the Normans, but the Normans would not give up because the English were on higher ground. They pretended to retreat down the hill and then quickly turned around and launched an offensive attack against the English troops. Using this tactic, they slowly worked away at the shield wall until they could defeat Harold's troops. King Harold II, the last Anglo-Saxon king of England, was killed during the battle.

It was originally known in English as Santlache ("Sandy Stream"), which the Normans changed into Sanguelac ("Blood Lake"), which was then shortened to Senlac: thus Senlac Hill is the commonly held name for the high ground defended by the English army.

Senlac Hill was about 84 metres (275 ft) above sea level before the top of the ridge was leveled off to create Battle Abbey. The hill is located near the town of Battle, East Sussex, England.

More Info: en.wikipedia.org