L125 v225 / L129 v226 tunnel mouths

passage/0-1/0 — upper-mouth

pixel-identical; pass / pass

passage/0-1/0 — lower-mouth

pixel-identical; pass / pass

passage/1-2/0 — upper-mouth

pixel-identical; pass / pass

passage/1-2/0 — lower-mouth

pixel-identical; pass / pass

passage/2-3/0 — upper-mouth

pixel-identical; pass / pass

passage/2-3/0 — lower-mouth

pixel-identical; low_contrast_geometry_visible / low_contrast_geometry_visible