VAR MCU of horned viper's body moving over sand. ECU of scales. VAR CU FA of snake's head peering from behind or over body, sand blowing. MCU FA of snake holding head erect, sand blowing. VAR MCU MS SA of snake holding head erect, sand blowing. VAR CU RA FA SA of snake winding quickly across sand, sand blowings; snake stopping. (44411)