cipal backbones of Illinois was threaded by these primeval routes, and high ground between the vast cypress swamps and mist-crowned drowned lands of Illinois was a boon to any traveler, especially that first traveler, the bison. This high ground ran between Kaskaskia and Shawneetown, on the Ohio River, the course becoming later a famous state highway. Its earliest name was the "Kaskaskia Trace."
Clark's spies, sent out to Illinois a year before, undoubtedly advised him to land at Fort Massac and, gaining from there this famous highway, to pursue it to Kaskaskia. His plan of surprising the British post necessitated his pursuing unexpected courses. It was well known that the British watched the Mississippi well; therefore he chose the land route. Here, at the mouth of the Tennessee, his men brought in a canoe full of white traders who had recently been in Kaskaskia; certain of these were engaged to guide Clark thither. The party dropped down to Massac Creek, which enters the Ohio just above the site of the old fort, and in that inlet secreted their flat-boats ready to begin their intrepid
