Part of Ostrov - 4 - západní část, Kostka has 9 routes documented on climbing.place. Routes range from grade 3 to 7. Routes are listed below with grade, style, and community notes.
Common styles: Rock Climbing, Textile belay, Fixed belay.
Nature protection: Climbing allowed all year round. Nature Protection Documents: Decision 2022-2026, Decision 2022-2026_Maps Authority OP CHKO Czech Paradise
OVK: Use magnesium according to sandstone rules, first ascents only with the consent of the administrator.