Mount Sukai
The peak lies in the Ashio Mountains of Japan , on the border of Nikkō in Tochigi Prefecture and Numata in Gunma Prefecture . 
<triplet> Japan <subj> Tochigi Prefecture <obj> contains administrative territorial entity <subj> Gunma Prefecture <obj> contains administrative territorial entity <triplet> Nikkō <subj> Japan <obj> country <subj> Tochigi Prefecture <obj> located in the administrative territorial entity <subj> Numata <obj> shares border with <triplet> Tochigi Prefecture <subj> Japan <obj> country <subj> Gunma Prefecture <obj> shares border with <triplet> Numata <subj> Japan <obj> country <subj> Nikkō <obj> shares border with <subj> Gunma Prefecture <obj> located in the administrative territorial entity <triplet> Gunma Prefecture <subj> Japan <obj> country <subj> Tochigi Prefecture <obj> shares border with