Mocná skála (Masiv u Jezinky) - M – Kraví doly on Clmb House. Venue in Kraví doly, Obrok, Kokořínsko, Czechia. Mocná skála (Masiv u Jezinky) - M is an individual climbing rock in Kraví doly, Obrok, Kokořínsko, Czechia. The ČHS record includes traditional sandstone cli...