Plot hole: The women leave the bordello and cross a waterless, hot mineral desert to reach Jericho. Meanwhile the posse that arrives at the bordello behind them takes a different route and catches up with them near the mine. Why didn't the women go that way?
Plot hole: The sheriff tells Van Damm that in order to get ahead of the women, he'll have to kill horses. Sure enough, the horse he's riding starts to founder, and the idiot shoots the horse before taking the saddle off.