@Gakuku The legend about the Blaník Mountain and its knights goes roughly like this.
Long ago, when the Czech lands were threatened by enemies, the good ruler Saint Wenceslas gathered a powerful army of knights. Instead of fighting immediately, he led them into the heart of Blaník Mountain. There, deep inside the mountain, lies a huge hidden hall where the knights, their horses, and their weapons rest in enchanted sleep.
They are not dead—only waiting.
The legend says the mountain will open when the Czech nation faces its greatest danger. At that moment
The mountain splits open.
Saint Wenceslas rides out first on a white horse.
Behind him follow thousands of armored knights from inside the mountain.