La grotta delle mummie

Zagor has been chosen to be one of the four Guardians of the Ancient Ones, who preserve the place in which the mummified bodies of the Kiowas’ ancestors are kept. In fact, Winter Snake, chief of the Kiowas, is also one of the Guardians. But Zagor, once inside the grotto, kills one guardian, stuns the other two and escapes with the precious sacred ornaments: what has happened to him?