abuelas action adventure adventureandadventurers adventureandadventurersinfiction adventurefiction adventurestories amazonas amazonriver amazonrivervalley aventuras aventuriers children'sfiction effectofhumanbeingson enkel expedition exploration fantasyfiction ficciónjuvenil fiction grandmothers grandmothersinfiction grandparentandchild grandparents grands-mères grossmutter großmutter indiansofsouthamerica indiansofsouthamericainfiction indiensd'amérique indiosdeaméricadelsur jugendbuch juvenilefiction largetypebooks nativeamericans nature newyorktimesreviewed nouvelles nouvellesoccultes paranormalfiction rainforests romand'aventures romans sobrenatural supernatural supernaturalinfiction teenagers valledelrío