Furthermore, some of the ancient structural remnants were discovered in good condition when repair work for the outfield bleachers of the stadium was being conducted in 1987, which raised the expectation that other remnants were remaining.
さらに1987年の球場外野席改修工事で、破壊されたと考えられていた遺構の一部が良好な状態で発見され、残る遺構も同様に残存している可能性が浮上した。