The highest Bulgarian waterfall - Rayskoto Praskalo (Paradise Sprinkler), has a height of fall - 124.5 m, springs almost from the very peak Botev, or as all locals call it Yumrukchal. It is located in the Dzhendema (Hell) Reserve - the largest in the Central Balkan National Park. It is included in the UNESCO Man and Biosphere Program, it is one of the largest and most inaccessible reserves in Bulgaria and on the Balkan Peninsula.

More information about the routes, information centers and rules in the Central Balkan National Park can be found on the website https://visitcentralbalkan.net/-2.html