State of Conservation
|Site||State Party||Year||Threats*||Danger List|
|yellowstone national parkYellowstone National Park||united states of america United States of America||2012||Air pollution,||No|
The threats indicated are listed in alphabetical order; their order does not constitute a classification according to the importance of their impact on the property.
Furthermore, they are presented irrespective of the type of threat faced by the property, i.e. with specific and proven imminent danger (“ascertained danger”) or with threats which could have deleterious effects on the property’s Outstanding Universal Value (“potential danger”).