Celtic Luxembourg existed during the period from roughly 600 BC until 100 AD, when the Celts inhabited what is now the territory of the Grand Duchy of Luxembourg. Their culture was well developed, especially from the 1st century BC, as can be seen from the remains of the extensive Titelberg site in the far southwest of the country and from the impressive finds in several tombs and necropolises in the Moselle valley and its surroundings. The Celts inhabited large areas of Europe from the Danube to the Rhine and Rhône during the 6th to 1st centuries BC, a period sometimes referred to as La Tène after a site in Switzerland where Celtic remains were discovered in 1857. It was around 100 BC that the Treveri, one of the Celtic tribes, entered a period of prosperity. They constructed a number of fortified settlements or oppida near the Moselle valley in what is now southern Luxembourg, western Germany and eastern France. Early inhabitants In the territory now covered by the Grand Duchy of Luxembourg, there is evidence of primitive inhabitants right back to the Paleolithic or Old Stone Age over 35,000 years ago. The oldest artifacts from this period are decorated bones found at Oetrange. However, the first real evidence of civilization is from the Neolithic or 5th millennium BC when houses began to appear. Traces have been found in the south of Luxembourg at Aspelt, Weiler-la-Tour, as well as at Grevenmacher and Diekirch. The dwellings were made of a combination of tree trunks for the basic structure, mud-clad wickerwork walls, and roofs of thatched reeds or straw. Pottery from this period has been found near Remerschen. While there is not much evidence of communities in Luxembourg at the beginning of the Bronze Age, a number of sites dating back to the period between the 13th and the 8th centuries BC provide evidence of dwellings and reveal artifacts such as pottery, knives and jewelry. These include Nospelt, Dalheim, Mompach and Remerschen. The Hallstatt culture The discovery in 1846 of a prehistoric cemetery at Hallstatt in Austria revealed distinctive artifacts from the Neolithic through to the early Iron Age from 600 to 450 BC. These are considered to be the first evidence of Celtic civilization and served as a model for similar finds which were to occur in other parts of Europe in areas inhabited by the Celts. In Luxembourg too, evidence of