The largest cave in Ojców National Park, this natural wonder stretches 320 metres and is visited by 100,000 people annually, including dozens of school groups in late May (consider calling ahead). The youngsters gather to hear the popular legend of Władysław Łokietek (Władysław the 'Elbow-high') who purportedly used this cave as a hideout in the early 14th century during his fight with the Bohemian king Wacław II for the Cracovian throne. As legend would tell it, the Polish Prince and his men were attacked in Ojców with Władysław only escaping death or capture when he discovered a secret passage into the cave. A timely spider wove a large web over the entrance, thus concealing it from his pursuers and the Prince was able to hideout here until he could regroup his forces, return to Kraków and take command over Małopolska, which he did in 1304; Władysław Łokietek was crowned in Wawel Cathedral as the King of Poland in 1320. To reach his former hideout set off on the black trail which rises 130 metres above the valley, though at a more gradual slope than that of the Dark Cave. If you want to get inside however, your best bet if to call in advance.