blˈæk dˈaɪəməndz ˈɪndᵻkˌeɪt: tʃˈæləndʒˌɪŋ tɹˈeɪlz fɔːɹ ɛkspˈiəɹɪənst hˈaɪkɚz, ɛkwˈɛstɹiənz ænd ˈɔːltɚɹˈeɪn bˈaɪsɪklˌɪsts.
Black Diamonds indicate: Challenging Trails for experienced hikers, equestrians and all-terrain bicyclists.