公元7—9世纪间,唐朝曾在相当于今内蒙古伊克昭盟鄂托克前旗、鄂托克旗境内,设置过“六胡州”、经略军、宥州等军事、政治区域.笔者近年曾到当地作过野外考察,也搜集到了一些历史资料,兹仅把历史资料与实地考察所见结合起来,从历史地理学角度对“六胡州”等问题作一些初步探讨.一、几座古城的考定北大池古城 北大池古城位于鄂前旗南境,北大池东岸约2公里处.内蒙古考古队的张郁同志,早在1963年9月就对古城进行了考古调查.古城大部已被流沙埋没,其露出沙 During the period from the 7th to the 9th century AD, the Tang Dynasty set up military and political regions such as the “Liu Hu”, the Leshan Military Region and the Youju Prefecture equivalent to the former Etuoke Banner and Etuoke Banner of the Ik Zu League in Inner Mongolia. I went to the locality to conduct a field investigation and I also collected some historical materials. I only combined the historical data with the on-the-spot investigation, and made some preliminary discussions on the “Huju” issue from the perspective of historical geography. The ancient city of the test Beidaichi Ancient City Beidachi Ancient City is located in the southern border of Hubei Province before the northern bank, about 2 kilometers east of Comrade Zhang Yu of Inner Mongolia archeology team, as early as September 1963 conducted an archaeological survey of the ancient city of most of the ancient city has been quicksand Buried, revealing the sand