In the Danube Gorges one can admire in the spring days the Yellow Tulip or The Boiler Tulip (Tulipa Hungarica), an endemic species found nowhere else in the world. Mentioned for the first time in 1884 by Hungarian Botanist Vincze von Borbas in the Leaflet of the Transylvania Association. It generally blooms in the first decade of April and can be admired in all its splendor on the steep rocky walls of the Danube’s Gorges. The flowers of the Boiler Tulip  are generally yellow and smell-free. At present, this species is protected by law (OG 57/2007) and the Berne Convention. It is included in the list of protected species and its area is part of The Iron Gates Natural Park  territory.