All Star Western #6

From the solicitation:

"Jonah Hex fights a giant bat to the death! But even with his winged foe slain, will he and Amadeus Arkham survive being trapped in a cave with the lost tribe of Miagani Indians? Hex and Arkham must enlist help – including some familiar faces and some surprising saviors – if they’re going to make it out of this death trap and bring justice to the enslaver of Gotham’s underprivileged children."

Seriously, just that first line of "Jonah Hex fights a giant bat to the death!" should be enough for you to know you have to buy this.