Beware of poisonous snakes, sign at a rest stop on Interstate 90 at a hiking trail above the Missouri River, Chamberlain, South Dakota, USA

90 above america american at beware caution cautionary chamberlain dakota danger dangerous dangerously dangers day daylight daytime during exterior exteriors hiking interstate missouri nobody north notice notices of on outdoor photo photos poisonous poisonously rest risk risks risky river serpentes shot shots sign signboard signboards signs snake snakes south states stop the toxic toxically trail united us us american usa venture ventures warn warning warnings warns