Climbing "Kusadla" at Mravenečník is a truly demanding experience. This route, graded 9-/9 (UIAA) or roughly 7b+ (French), represents a significant physical and mental challenge. The Mravenečník crag itself is known for its sharp, technical rock, and "Kusadla" is no exception. Expect sustained sequences of powerful moves on small crimps and pockets, often requiring precise footwork and body positioning. The crux usually involves a tricky, balancy section near the middle or top, where maintaining composure and making the right decision is critical. Success on "Kusadla" requires not only strength and endurance but also a good head for heights and the ability to read the rock effectively. It's a rewarding climb that leaves you with a sense of accomplishment and a healthy dose of exhaustion.