As of 6:15 p.m. this evening, Cal-Fire reported that the 1.5 acre Rock Fire burning in the Santa Cruz mountains was 75% contained. The brush fire, which inotially threatened 3 homes, broke out around 3:30 p.m. in the Upper Zayante area (near the intersection of Highway 17 and Hutchinson Road). The cause of the Rock Fire is still being investigated.