JamJam on Clmb House. Venue in U Prioru 804/15, 161 00 Praha 6-Ruzyně, Czech Republic, Czechia. JamJam is a bouldering gym in Prague 6 - Ruzyně, founded by the route setters Jan and Anežka Šolc of OMHOLDS together with friends. Of its more than 1,050 m²...