Hidden Valley Mixed Martial Arts is the south valley's premiere MMA training facility located in Sandy UT. Originally knows as Hidden Valley Jiu Jitsu and Judo Academy, Professor Hermosillo has combined years of experience with many new classes. HV MMA now offers more than Judo and JiuJitsu , we now offer Muay Thai Kickboxing , Wrestling and MMA with coach and Kru John Valentine. We offer a variety of classes all day long, Mon - Sat.