Quite a silly film (the ‘accidents’, the fort that is in the middle of flat countryside yet supposedly the villains have built an underground tunnel from a mine to it) with a far too elaborate and convoluted plot. It’s hard to know whether the silliness is intentional or not. Quite watchable and fast paced but I’d say that it definitely ranks in the lower half of Gemma’s 1965-1969 westerns. It does sort of look as if it should have been shot in late 1965 (pre Few Dollats More and Django) rather than Spring of 1966 when it was filmed. Sophie Daumer presumably came with the French money - she and Jacques Sernas get special billing on the posters - which is why she wasn’t in other Italian westerns.