Between the 10th and 4th century BC, the Ligures were found in Provence from Massilia as far as modern Liguria. They were of uncertain origin; they may have been the descendants of the indigenous Neolithic peoples. According to Strabo, the Ligurians, living in proximity of numerous Celtic mountain tribes, were a different people (ἑτεροεθνεῖς), but were similar to the Celts in their modes of life. They did not have their own alphabet, but their language remains in place names in Provence ending in the suffixes -asc, -osc. -inc, -ates, and -auni. The ancient geographer Posidonios wrote of them: Their country is savage and dry. The soil is so rocky that you cannot plant anything without striking stones. The men compensate for the lack of wheat by hunting... They climb the mountains like goats. They were also warlike; they invaded Italy and went as far as Rome in the 4th century BC, and they later aided the passage of Hannibal, on his way to attack Rome (218 BC). Traces of the Ligures remain today in the dolmens and other megaliths found in eastern Provence, in the primitive stone shelters called 'Bories' found in the Luberon and Comtat, and in the rock carvings in the Valley of Marvels near Mont Bégo in the Alpes-Maritimes, at an altitude of 2,000 meters.