It can be believed there was little tree-cutting on these first pioneer roads. Save in the laurel regions of the Allegheny and Cumberland Mountains, where the forest trees were supplanted by these smaller growths, there was little undergrowth; the absence of sunlight occasioned this, and rendered the old forest more easily traversed than one would suppose after reading many accounts of pioneer life. The principal interruption of travelers on the old trails was in the form of fallen trees and dead wood which had been brought to the ground by the storms. With the exception of the live trees which were blown over, these forms of impediment to travel were not especially menacing; the dead branches crumbled before an ax. The trees which were broken down or uprooted by the winds, however, were obstructions difficult to remove, and tended to make pioneer roads crooked, as often perhaps as standing trees. We can form some practical notion of the dangerous nature of falling trees by studying certain of the great improvements which were early projected in these woods. The Allegheny Portage Railway over the
