Big Morongo Canyon Preserve
The entrance to the preserve is located within Morongo Valley , California , an unincorporated town within San Bernardino County just off California State Route 62 . 
<triplet> Morongo Valley, California <subj> San Bernardino County <obj> located in the administrative territorial entity <triplet> California State Route 62 <subj> San Bernardino County <obj> located in the administrative territorial entity