Part of Ostrov - 1 - severní část, Obr has 23 routes documented on climbing.place. Routes range from grade 4+ to 8/8+. Routes are listed below with grade, style, and community notes.
Common styles: Rock Climbing, Textile belay, Fixed belay, Route on sun, Route in shadow.
Nature protection: tower and surroundings closed from February 23rd to June 30th due to peregrine falcon nesting.
OVK: Use magnesium according to sandstone rules, first ascents only with the consent of the administrator.