There's more than one place called '''Huntsville''':
Huntsville (Ontario) - in the Muskoka district of Central Ontario
Huntsville (Alabama) - in Madison County (Alabama), in the Mountains (Alabama) region of Alabama
Huntsville (Arkansas) - in Madison County (Arkansas), in the Ozarks (Arkansas) region of Arkansas
Huntsville (Texas) - in Walker County, in the Piney Woods region of Texas