Hold it right there, outlaw!
This article is littered with spoilers, so I reckon you might ought'a mosey on down the road if you don't want to read any plot details.
Río del Toro
Rio del Toro's location on the Map
Río del Toro (or Bull River) is a location featured in in the Red Dead Redemption Perdido region of the Nuevo Paraiso territory.
The area is an out-of-the-way location along the southern shore of the
San Luis River, north of Chuparosa.
The fourth treasure of the
Treasure Hunter Challenges can be found here. This area cannot be reached until Marston gains access to Nuevo Paraíso.
The discovery of
locations in count towards the following Red Dead Redemption Trophies/Achievements:
Hey there, cowboy. It looks like this little ol' article is a bit puny.
I reckon you could impress me by adding to it. Don't be shy now. If you're logged in, it'll help you earn them fancy achievements, too.