登戸古墳群
茨城県常総市杉山６１１
https://www2.wagmap.jp/ibaraki/MAP?API=1&mid=34&mps=25000&mpx=139.955265710738&mpy=36.115285124126&gprj=3&dtp=34&mtl=11104,11105,11106,11107&mcul=12073,12074,12075,12076&mcx=139.95852497856848&mcy=36.11209832628114&pmd=print&msw=0&msh=0&iork=undefined&xmi
3.0
