Middle Spring was a vital water stop on the Cimarron Route, also called the Dry Route. This area, fed by natural springs, had water all year long. There were three springs: the lower, middle and upper springs. The lower spring was also known as Wagon Bed Spring. The upper spring was known as Flag Spring. Middle Spring had no other name. Because the Cimarron River usually had no water at this point (it runs underground in this area), the springs were essential to survival on this route of the Santa Fe Trail.