Imoseyama is a mountain that is often described in the Manyoshu because of its excellent scenery. Mainly walking along Yamato-kaido, the route leads you to the estimated location of the Hagiwara-umaya (a lodging place) and Seyama to the JR Nishikaseda Station. You can feel how straight-lined the Nankaido was made to be.
The pink line indicates where the Nankaido used to be. The red line is the walking course.
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JR Koya-guchi Station
34.307623,135.55704000000003,13 -

Old Katsuragi-kan
34.3073959,135.5570378,17 -

Jizo-ji temple
34.306908472488715,135.55667301957396,17 -

Emperor Saga mikuruma-ishi
34.3030698,135.5562368,18 -

Old Koya-guchi ordinary and higher primary school schoolhouse
34.304042567116014,135.55201890472415,16 -

Kaki-no-sato Kudoyama, Michi-no-eki
34.2932,135.55554600000005,17 -

Niukanshobu Shrine
34.29431,135.54942700000004,15 -

Jison-in temple
34.295146692077225,135.5499478952454,16 -

Nakatanigawa-suimon sluice
34.3035494,135.53459939999993,16 -

Kinokawa-watashiba ferry
34.30331896951993,135.5346315865081,17 -
Nagare-ido
34.302272140243026,135.52127719643408,18 -

Nyusakado Shrine
34.2892006,135.5200052,16 -

Niutsuhime Shrine
34.2627276,135.5220127,13 -
Oyabu-kyozuka
34.301889371151766,135.4992119753631,17 -

The ruins of Saya-dera temple
34.29550409385085,135.48945314096989,16 -

Matsuyama-kajisui
34.296109334546124,135.4863495942261,17 -

Koniwadanigawa-toi aqueduct bridge
34.29193016106902,135.47564013831482,18 -

Jigose no kusunoki
34.28890599773634,135.4751125348488,19 -

Jingan-ji temple
34.291636272090635,135.46922934722136,18 -

Horaisan Shrine
34.2916687,135.46882800000003,13 -
Hagiwara ruins
34.289301903269426,135.46366883479618,15 -

Kinokawa-manbano-sato, Michi-no-eki
34.2845203,135.46455879999996,15 -
Old Kinokawa bank
34.28441363281329,135.46085128842162,17 -

Imoyama (another theory)
34.276078,135.45692510000003,15 -
Seyama-jo castle ruins
34.2857965173735,135.4540921217041,16 -

Seyama and Imoyama
34.285829590704274,135.4536206184937,15 -

Tatsuno-toi aqueduct bridge
34.2830825,135.44826579999994,16 -

Funaokayama
34.2788554,135.45414140000003,16 -

The tombstone of Hanaoka Seishu
34.2824864,135.44075420000001,16 -

Shunrinken-juku ruins
34.2815042,135.44270860000006,17 -

seishu-no-sato, Michi-no-eki
34.28121540000001,135.441599,16 -

Nate-hachiman Shrine
34.2789725,135.44137009999997,16 -

Old nate-juku Honjin
34.2757929,135.43584520000002,15 -

Komyo-ji no matsu
34.2760669,135.4314508,16

Subsidies for Culture and Arts Promotion from the Agency for Cultural Affairs of Japan