Part of Kosobody, U dubu has 3 routes documented on climbing.place. Routes range from grade 2 to 6-. Routes are listed below with grade, style, and community notes.
Common styles: Route on sun.
Rules
The ČHS rules for Czech rock areas and the local regional commission's rules apply: do not alter the rock or holds, do not climb on wet rock, and follow ČHS principles for first ascents.