Known, yetunknown: A personal journeyinto
the past, present, andfuture ofthe rio Tunyan.
RETURN TO
TUNUYAN
Descendingfrom"Portillo"atnearly
15,000feetabovesealevel.Silvio
Gurrieri,AugustinParietti,RobertDerias,
NouriaNewman,andBenStookesberry
followlocalArrierosandtheirmuleteam
into the headwaters of the rio Tunuyan.