On May 15, 2017 has announced the Fourth edition of the International competition "Karst under protection - gift for the future generations". It will be held within the framework of the International Scientific-practical forum “Protected Karst Territories – Legislation, Tourism and Monitoring” (ProKARSTerra`2019, Sofia, Bulgaria). The competition follows the Forum motto: "Protected karst territories – islands of sustainable development" and runs in 5 traditional categories, as part of the competition categories have been updated and new ones have been added.