The overall width of the Cimarron River basin valley eroded in southern Grant County indicate in historical times past, it has been a raging river of significant proportions.
2.
To the East they border the Moravian Gate, to the West and North West they border the N�zk?Jesen�k Range, to the South they border the basin valley of the river Be va, while in the North they end near Opava and Ostrava.