 In 1850 four wagon trains turned west on the Laramie Plains, along Wyoming's southern border to Fort Bridger.According to one source, "Neither the number of wagons nor the number of people that eventually used this road to cross the Sierra Madres makes this trail significant.What makes this road unique is that Native Americans and their traveling companions did not just cross the Continental Divide; they made a path over the mountains and through the Wyoming Basin."