Dramatic reveal of the Madison Valley from behind tall Cottonwood trees The Madison river winds through the bright autumn colors of changing Cottonwood, scrub oak and grasses in the Madison Valley, southwestern Montana, as the Gravelly mountain range towers in the distance -- Available in HD and 4k -- 3840 x 2160 - 2.6 GB - QuickTime Movie - Apple ProRes 422 HQ - 78.5 MB/sec - 23.98fps --