Hey, you’ve made it. Congrats. Prachovské skály is a rock city near the town Jičín in Český ráj. There are various trails of varying difficulty and length, where you can enjoy beautiful rocks, climb various staircases carved into rocks, squeeze through narrow corridors and do something good for your health.
You may also want to check out the somewhat related galleries: Český ráj (the main gallery of the whole trip, sans the culinary guide and hiking in Prachovské skály) and Delicious Delicacies, Český ráj (your culinary guide to Český ráj).