たどったそうだ
辿ったそうだ
tadotta sōda

Godan Verb (ru)
Evidential Auxiliary

Expresses hearsay about a past event ("I heard that...") of たどる

1. It is said that [subject] went through/followed/traced.; [Subject] apparently experienced/went through.

Past/Perfective
Hearsay Evidence
Usually Written in Kana