In the middle of the Hohe Tauern, in the middle of Austria's largest national park, the Sulzbachtäler Wilderness Area was also internationally recognised in 2019 with the IUCN Category Ib, the second highest class, and included in the list of "World Class Nature Reserves".
As for each category, the IUCN formulates precise requirements and criteria for protected area category I as well. Within wilderness areas, it distinguishes between Category 1a (Strict Nature Reserve) and 1b (Wilderness Area), whereby protected areas in Category 1a are usually subject to a far-reaching ban on access and serve almost exclusively scientific research purposes. Category 1b protected areas, such as the Sulzbächer Wilderness Area, must orient their efforts towards the primary goal of "ecological integrity", whereby this must also be "preserved in the long term".
The permanent preservation of wilderness areas is intended to secure their protected status in perpetuity. A natural buffer zone is also crucial for the establishment of a wilderness area. And as is the case for 75% of the area in the national park, there is no intervention, neither guiding nor correcting.