Located at the Hidden Hollow Campground, near Mansfield, Ohio. and counting.. ... For those of you who dislike the outdoorsy camping thing, or if you want a little privacy there are several hotels within 7 miles of Hidden Hollow . Located at the intersection of I-71 and State Route 13 (about 10 minutes from Hidden Hollow ‘02) : . ... HERE IS A MAP: This map is of Central Ohio surrounding the I-71 exit to Hidden Hollow. ... Map of Hidden Hollow Camp Grounds . ... Hidden Hollow 2002 Forms . ...