When the wagon trains turned south at Chouteau's Island from the Santa Fe Trail, to go down to the Cimarron River at Wagon Bed Springs, they skirted the west side of small, very deep lake called Clear Lake. It was about fifty feet in diameter, and, at one time, it was sounded to the depth of 250 feet without finding any bottom. When the wagons passed this point they followed Bear Creek Pass through the sandhills.